<!DOCTYPE html>
<html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-0 vector-toc-not-available vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-0 skin-theme-clientpref-day vector-sticky-header-enabled" lang="de" dir="ltr"><head>
<meta charset="UTF-8">
<title>Exponentialsumme</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="icon" type="image/png" href="./_res_/favicon.png">
<link rel="canonical" href="https://de.wikipedia.org/wiki/Exponentialsumme"> <link href="./_mw_/ext.cite.styles.css" rel="stylesheet" type="text/css">
<link href="./_mw_/ext.math.styles.css" rel="stylesheet" type="text/css">
<link href="./_mw_/ext.wikimediamessages.styles.css" rel="stylesheet" type="text/css">
<link href="./_mw_/skins.vector.icons.css" rel="stylesheet" type="text/css">
<link href="./_mw_/skins.vector.search.codex.styles.css" rel="stylesheet" type="text/css">
<link href="./_mw_/skins.vector.styles.css" rel="stylesheet" type="text/css">
<meta name="ResourceLoaderDynamicStyles" content="">
<link href="./_mw_/ext.gadget.citeRef.css" rel="stylesheet" type="text/css">
<link href="./_mw_/ext.gadget.defaultPlainlinks.css" rel="stylesheet" type="text/css">
<link href="./_mw_/ext.gadget.dewikiCommonHide.css" rel="stylesheet" type="text/css">
<link href="./_mw_/ext.gadget.dewikiCommonLayout.css" rel="stylesheet" type="text/css">
<link href="./_mw_/ext.gadget.dewikiCommonStyle.css" rel="stylesheet" type="text/css">
<link href="./_mw_/ext.gadget.dewikiDarkmode.css" rel="stylesheet" type="text/css">
<link href="./_mw_/ext.gadget.dewikiResponsive.css" rel="stylesheet" type="text/css">
<link href="./_mw_/ext.gadget.specialSearch.css" rel="stylesheet" type="text/css">
<link rel="stylesheet" type="text/css" href="./_mw_/site.styles.css">
<link rel="stylesheet" type="text/css" href="./_mw_/noscript.css">
<link rel="stylesheet" type="text/css" href="./_res_/footer.css">
<link rel="stylesheet" type="text/css" href="./_res_/vector-2022.css">
</head>
<body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject page-Exponentialsumme rootpage-Exponentialsumme skin-vector-2022 action-view">
<div class="mw-page-container">
<div class="mw-page-container-inner">
<div class="mw-content-container">
<main id="content" class="mw-body">
<header class="mw-body-header vector-page-titlebar">
<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Exponentialsumme</span></h1>
</header>
<a id="top"></a>
<div id="bodyContent" class="vector-body ve-init-mw-desktopArticleTarget-targetContainer" aria-labelledby="firstHeading" data-mw-ve-target-container="">
<div id="contentSub">
<div id="mw-content-subtitle"></div>
</div>
<div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="de" dir="ltr"><div class="mw-content-ltr mw-parser-output" lang="de" dir="ltr"><p>Eine <b>Exponentialsumme</b> ist in der <a href="Analytische_Zahlentheorie" title="Analytische Zahlentheorie">analytischen Zahlentheorie</a> eine endliche Summe der Form
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle S_{f}(N)=\sum \limits _{1\leq n\leq N}e\left(f(n)\right)}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<msub>
<mi>S</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>f</mi>
</mrow>
</msub>
<mo stretchy="false">(</mo>
<mi>N</mi>
<mo stretchy="false">)</mo>
<mo>=</mo>
<munder>
<mo movablelimits="false">∑<!-- ∑ --></mo>
<mrow class="MJX-TeXAtom-ORD">
<mn>1</mn>
<mo>≤<!-- ≤ --></mo>
<mi>n</mi>
<mo>≤<!-- ≤ --></mo>
<mi>N</mi>
</mrow>
</munder>
<mi>e</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>f</mi>
<mo stretchy="false">(</mo>
<mi>n</mi>
<mo stretchy="false">)</mo>
</mrow>
<mo>)</mo>
</mrow>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle S_{f}(N)=\sum \limits _{1\leq n\leq N}e\left(f(n)\right)}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/076a8bf54d7f6466eddc921b349755915407acf3.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -3.338ex; width:23.507ex; height:5.843ex;" alt="{\displaystyle S_{f}(N)=\sum \limits _{1\leq n\leq N}e\left(f(n)\right)}" loading="lazy"></span></dd></dl>
<p>für ein <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle N\in \mathbb {N} }">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>N</mi>
<mo>∈<!-- ∈ --></mo>
<mrow class="MJX-TeXAtom-ORD">
<mi mathvariant="double-struck">N</mi>
</mrow>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle N\in \mathbb {N} }</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/8b985ba501f78cb9890f3ecda3e2e315cbd5cb26.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:6.582ex; height:2.176ex;" alt="{\displaystyle N\in \mathbb {N} }" loading="lazy"></span>, wobei <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle f:[1,N]\to \mathbb {R} }">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>f</mi>
<mo>:</mo>
<mo stretchy="false">[</mo>
<mn>1</mn>
<mo>,</mo>
<mi>N</mi>
<mo stretchy="false">]</mo>
<mo stretchy="false">→<!-- → --></mo>
<mrow class="MJX-TeXAtom-ORD">
<mi mathvariant="double-struck">R</mi>
</mrow>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle f:[1,N]\to \mathbb {R} }</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/f5656fbf73ac8772c6884e70b72b427f79215491.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:14.062ex; height:2.843ex;" alt="{\displaystyle f:[1,N]\to \mathbb {R} }" loading="lazy"></span> eine (üblicherweise <a href="Glatte_Funktion" title="Glatte Funktion">glatte</a>) Funktion und <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle e(x):=e^{2\pi ix}}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>e</mi>
<mo stretchy="false">(</mo>
<mi>x</mi>
<mo stretchy="false">)</mo>
<mo>:=</mo>
<msup>
<mi>e</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>2</mn>
<mi>π<!-- π --></mi>
<mi>i</mi>
<mi>x</mi>
</mrow>
</msup>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle e(x):=e^{2\pi ix}}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/abd1322823ab46735aa8a0ee02285b552e7e50d3.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:12.555ex; height:3.176ex;" alt="{\displaystyle e(x):=e^{2\pi ix}}" loading="lazy"></span> ist.
</p><p>Exponentialsummen werden insbesondere in der <a href="Russland" title="Russland">russischen</a> Literatur (z. B. bei <a href="Iwan_Matwejewitsch_Winogradow" title="Iwan Matwejewitsch Winogradow">Iwan Winogradow</a>) auch als <b>trigonometrische Summen</b> bezeichnet.
</p><p>Ist <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle f}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>f</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle f}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/132e57acb643253e7810ee9702d9581f159a1c61.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:1.279ex; height:2.509ex;" alt="{\displaystyle f}" loading="lazy"></span> ein reelles <a href="Polynom" title="Polynom">Polynom</a>, so bezeichnet man <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle S_{f}(N)}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<msub>
<mi>S</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>f</mi>
</mrow>
</msub>
<mo stretchy="false">(</mo>
<mi>N</mi>
<mo stretchy="false">)</mo>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle S_{f}(N)}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/d85345c8cc72d8efd072a580b0b713634dc6d982.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:6.434ex; height:3.009ex;" alt="{\displaystyle S_{f}(N)}" loading="lazy"></span> auch als <b>Weyl-Summe</b>, benannt nach <a href="Hermann_Weyl" title="Hermann Weyl">Hermann Weyl</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Eigenschaften">Eigenschaften</h2></div>
<p>Die Funktion <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle e(x)}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>e</mi>
<mo stretchy="false">(</mo>
<mi>x</mi>
<mo stretchy="false">)</mo>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle e(x)}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/b461ed5c475f0c3b89f7571425a24542dd53f9c3.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:4.222ex; height:2.843ex;" alt="{\displaystyle e(x)}" loading="lazy"></span> nennt man <i>additiver <a href="Charakter_(Mathematik)" title="Charakter (Mathematik)">Charakter</a></i> auf <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathbb {R} }">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mrow class="MJX-TeXAtom-ORD">
<mi mathvariant="double-struck">R</mi>
</mrow>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle \mathbb {R} }</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/786849c765da7a84dbc3cce43e96aad58a5868dc.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.678ex; height:2.176ex;" alt="{\displaystyle \mathbb {R} }" loading="lazy"></span>, <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle f}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>f</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle f}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/132e57acb643253e7810ee9702d9581f159a1c61.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:1.279ex; height:2.509ex;" alt="{\displaystyle f}" loading="lazy"></span> nennt man <i>Amplitudenfunktion</i> und <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle N}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>N</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle N}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/f5e3890c981ae85503089652feb48b191b57aae3.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.064ex; height:2.176ex;" alt="{\displaystyle N}" loading="lazy"></span> <i>Länge</i> der Summe.
</p><p>Der Shift des Argumentes wird mit
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle S_{f}(N,M):=\sum \limits _{M<n\leq N+M}e\left(f(n)\right)=\sum \limits _{1\leq n\leq N}e\left(f(n+M)\right)}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<msub>
<mi>S</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>f</mi>
</mrow>
</msub>
<mo stretchy="false">(</mo>
<mi>N</mi>
<mo>,</mo>
<mi>M</mi>
<mo stretchy="false">)</mo>
<mo>:=</mo>
<munder>
<mo movablelimits="false">∑<!-- ∑ --></mo>
<mrow class="MJX-TeXAtom-ORD">
<mi>M</mi>
<mo><</mo>
<mi>n</mi>
<mo>≤<!-- ≤ --></mo>
<mi>N</mi>
<mo>+</mo>
<mi>M</mi>
</mrow>
</munder>
<mi>e</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>f</mi>
<mo stretchy="false">(</mo>
<mi>n</mi>
<mo stretchy="false">)</mo>
</mrow>
<mo>)</mo>
</mrow>
<mo>=</mo>
<munder>
<mo movablelimits="false">∑<!-- ∑ --></mo>
<mrow class="MJX-TeXAtom-ORD">
<mn>1</mn>
<mo>≤<!-- ≤ --></mo>
<mi>n</mi>
<mo>≤<!-- ≤ --></mo>
<mi>N</mi>
</mrow>
</munder>
<mi>e</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>f</mi>
<mo stretchy="false">(</mo>
<mi>n</mi>
<mo>+</mo>
<mi>M</mi>
<mo stretchy="false">)</mo>
</mrow>
<mo>)</mo>
</mrow>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle S_{f}(N,M):=\sum \limits _{M<n\leq N+M}e\left(f(n)\right)=\sum \limits _{1\leq n\leq N}e\left(f(n+M)\right)}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/480324e76ef52ee0878d68e368329c0b51795e1e.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -3.338ex; width:53.895ex; height:5.843ex;" alt="{\displaystyle S_{f}(N,M):=\sum \limits _{M<n\leq N+M}e\left(f(n)\right)=\sum \limits _{1\leq n\leq N}e\left(f(n+M)\right)}" loading="lazy"></span></dd></dl>
<p>notiert, wobei <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle f}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>f</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle f}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/132e57acb643253e7810ee9702d9581f159a1c61.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:1.279ex; height:2.509ex;" alt="{\displaystyle f}" loading="lazy"></span> nun auf dem Interval <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [M+1,M+N]}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mo stretchy="false">[</mo>
<mi>M</mi>
<mo>+</mo>
<mn>1</mn>
<mo>,</mo>
<mi>M</mi>
<mo>+</mo>
<mi>N</mi>
<mo stretchy="false">]</mo>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle [M+1,M+N]}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/c2cf2a8a5d2d4947da12ea468fd1123907dd18ca.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:16.119ex; height:2.843ex;" alt="{\displaystyle [M+1,M+N]}" loading="lazy"></span> definiert sein muss.
</p>
<div class="mw-heading mw-heading3"><h3 id="Komplexe_Verallgemeinerung">Komplexe Verallgemeinerung</h3></div>
<p>Exponentialsummen können für eine reelle Folge <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle (a_{n})_{1\leq n\leq N}}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mo stretchy="false">(</mo>
<msub>
<mi>a</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>n</mi>
</mrow>
</msub>
<msub>
<mo stretchy="false">)</mo>
<mrow class="MJX-TeXAtom-ORD">
<mn>1</mn>
<mo>≤<!-- ≤ --></mo>
<mi>n</mi>
<mo>≤<!-- ≤ --></mo>
<mi>N</mi>
</mrow>
</msub>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle (a_{n})_{1\leq n\leq N}}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/b222472f34eb04882a19a02bcb8994d7dae8ab84.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:10.314ex; height:2.843ex;" alt="{\displaystyle (a_{n})_{1\leq n\leq N}}" loading="lazy"></span> auch auf
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \sum \limits _{1\leq n\leq N}a_{n}e\left(f(n)\right)}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<munder>
<mo movablelimits="false">∑<!-- ∑ --></mo>
<mrow class="MJX-TeXAtom-ORD">
<mn>1</mn>
<mo>≤<!-- ≤ --></mo>
<mi>n</mi>
<mo>≤<!-- ≤ --></mo>
<mi>N</mi>
</mrow>
</munder>
<msub>
<mi>a</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>n</mi>
</mrow>
</msub>
<mi>e</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>f</mi>
<mo stretchy="false">(</mo>
<mi>n</mi>
<mo stretchy="false">)</mo>
</mrow>
<mo>)</mo>
</mrow>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle \sum \limits _{1\leq n\leq N}a_{n}e\left(f(n)\right)}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/2b494180a6cb34ae51fce9b0aa28b620c5aca7be.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -3.338ex; width:16.422ex; height:5.843ex;" alt="{\displaystyle \sum \limits _{1\leq n\leq N}a_{n}e\left(f(n)\right)}" loading="lazy"></span></dd></dl>
<p>verallgemeinert werden. Dies entspricht der obigen Definition der Exponentialsumme mit einer <a href="Komplexe_Zahlen" class="mw-redirect" title="Komplexe Zahlen">komplexen Funktion</a> <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle g:[1,N]\to \mathbb {C} }">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>g</mi>
<mo>:</mo>
<mo stretchy="false">[</mo>
<mn>1</mn>
<mo>,</mo>
<mi>N</mi>
<mo stretchy="false">]</mo>
<mo stretchy="false">→<!-- → --></mo>
<mrow class="MJX-TeXAtom-ORD">
<mi mathvariant="double-struck">C</mi>
</mrow>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle g:[1,N]\to \mathbb {C} }</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/9ffe439f713ed616a61eab755ac87e59664c2a5a.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:13.899ex; height:2.843ex;" alt="{\displaystyle g:[1,N]\to \mathbb {C} }" loading="lazy"></span>, denn es gilt
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle e(g(n))=e^{2\pi ig(n)}=e^{2\pi i\operatorname {Re} (g(n))-2\pi \operatorname {Im} (g(n))}}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>e</mi>
<mo stretchy="false">(</mo>
<mi>g</mi>
<mo stretchy="false">(</mo>
<mi>n</mi>
<mo stretchy="false">)</mo>
<mo stretchy="false">)</mo>
<mo>=</mo>
<msup>
<mi>e</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>2</mn>
<mi>π<!-- π --></mi>
<mi>i</mi>
<mi>g</mi>
<mo stretchy="false">(</mo>
<mi>n</mi>
<mo stretchy="false">)</mo>
</mrow>
</msup>
<mo>=</mo>
<msup>
<mi>e</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>2</mn>
<mi>π<!-- π --></mi>
<mi>i</mi>
<mi>Re</mi>
<mo><!-- --></mo>
<mo stretchy="false">(</mo>
<mi>g</mi>
<mo stretchy="false">(</mo>
<mi>n</mi>
<mo stretchy="false">)</mo>
<mo stretchy="false">)</mo>
<mo>−<!-- − --></mo>
<mn>2</mn>
<mi>π<!-- π --></mi>
<mi>Im</mi>
<mo><!-- --></mo>
<mo stretchy="false">(</mo>
<mi>g</mi>
<mo stretchy="false">(</mo>
<mi>n</mi>
<mo stretchy="false">)</mo>
<mo stretchy="false">)</mo>
</mrow>
</msup>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle e(g(n))=e^{2\pi ig(n)}=e^{2\pi i\operatorname {Re} (g(n))-2\pi \operatorname {Im} (g(n))}}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/84f1ebb3b315510e2209bd22f653189db1895b39.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:40.145ex; height:3.343ex;" alt="{\displaystyle e(g(n))=e^{2\pi ig(n)}=e^{2\pi i\operatorname {Re} (g(n))-2\pi \operatorname {Im} (g(n))}}" loading="lazy"></span></dd></dl>
<p>und somit gilt
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle a_{n}=e^{-2\pi \operatorname {Im} (g(n))}.}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<msub>
<mi>a</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>n</mi>
</mrow>
</msub>
<mo>=</mo>
<msup>
<mi>e</mi>
<mrow class="MJX-TeXAtom-ORD">
<mo>−<!-- − --></mo>
<mn>2</mn>
<mi>π<!-- π --></mi>
<mi>Im</mi>
<mo><!-- --></mo>
<mo stretchy="false">(</mo>
<mi>g</mi>
<mo stretchy="false">(</mo>
<mi>n</mi>
<mo stretchy="false">)</mo>
<mo stretchy="false">)</mo>
</mrow>
</msup>
<mo>.</mo>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle a_{n}=e^{-2\pi \operatorname {Im} (g(n))}.}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/41a2e250eb009574b632e3301a7a79e4a9e25cea.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:17.235ex; height:3.176ex;" alt="{\displaystyle a_{n}=e^{-2\pi \operatorname {Im} (g(n))}.}" loading="lazy"></span></dd></dl>
<p>Noch allgemeiner definiert man
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle S_{\Phi ,F}(N_{1};\dots ;N_{r})=\sum \limits _{1\leq x_{1}\leq N_{1}}\cdots \sum \limits _{1\leq x_{r}\leq N_{r}}\Phi (x_{1},\dots ,x_{r})e\left(F(x_{1},\dots ,x_{r})\right)}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<msub>
<mi>S</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi mathvariant="normal">Φ<!-- Φ --></mi>
<mo>,</mo>
<mi>F</mi>
</mrow>
</msub>
<mo stretchy="false">(</mo>
<msub>
<mi>N</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>1</mn>
</mrow>
</msub>
<mo>;</mo>
<mo>…<!-- … --></mo>
<mo>;</mo>
<msub>
<mi>N</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>r</mi>
</mrow>
</msub>
<mo stretchy="false">)</mo>
<mo>=</mo>
<munder>
<mo movablelimits="false">∑<!-- ∑ --></mo>
<mrow class="MJX-TeXAtom-ORD">
<mn>1</mn>
<mo>≤<!-- ≤ --></mo>
<msub>
<mi>x</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>1</mn>
</mrow>
</msub>
<mo>≤<!-- ≤ --></mo>
<msub>
<mi>N</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>1</mn>
</mrow>
</msub>
</mrow>
</munder>
<mo>⋯<!-- ⋯ --></mo>
<munder>
<mo movablelimits="false">∑<!-- ∑ --></mo>
<mrow class="MJX-TeXAtom-ORD">
<mn>1</mn>
<mo>≤<!-- ≤ --></mo>
<msub>
<mi>x</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>r</mi>
</mrow>
</msub>
<mo>≤<!-- ≤ --></mo>
<msub>
<mi>N</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>r</mi>
</mrow>
</msub>
</mrow>
</munder>
<mi mathvariant="normal">Φ<!-- Φ --></mi>
<mo stretchy="false">(</mo>
<msub>
<mi>x</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>1</mn>
</mrow>
</msub>
<mo>,</mo>
<mo>…<!-- … --></mo>
<mo>,</mo>
<msub>
<mi>x</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>r</mi>
</mrow>
</msub>
<mo stretchy="false">)</mo>
<mi>e</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>F</mi>
<mo stretchy="false">(</mo>
<msub>
<mi>x</mi>
<mrow class="MJX-TeXAtom-ORD">
<mn>1</mn>
</mrow>
</msub>
<mo>,</mo>
<mo>…<!-- … --></mo>
<mo>,</mo>
<msub>
<mi>x</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi>r</mi>
</mrow>
</msub>
<mo stretchy="false">)</mo>
</mrow>
<mo>)</mo>
</mrow>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle S_{\Phi ,F}(N_{1};\dots ;N_{r})=\sum \limits _{1\leq x_{1}\leq N_{1}}\cdots \sum \limits _{1\leq x_{r}\leq N_{r}}\Phi (x_{1},\dots ,x_{r})e\left(F(x_{1},\dots ,x_{r})\right)}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/e97b2d954f271931cecefbfb0986fb1139017fae.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -3.338ex; width:68.785ex; height:5.843ex;" alt="{\displaystyle S_{\Phi ,F}(N_{1};\dots ;N_{r})=\sum \limits _{1\leq x_{1}\leq N_{1}}\cdots \sum \limits _{1\leq x_{r}\leq N_{r}}\Phi (x_{1},\dots ,x_{r})e\left(F(x_{1},\dots ,x_{r})\right)}" loading="lazy"></span></dd></dl>
<p>für eine beliebige komplex-wertige Funktion <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \Phi }">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi mathvariant="normal">Φ<!-- Φ --></mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle \Phi }</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/aed80a2011a3912b028ba32a52dfa57165455f24.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.678ex; height:2.176ex;" alt="{\displaystyle \Phi }" loading="lazy"></span> und eine reell-wertige Funktion <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle F}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>F</mi>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle F}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/545fd099af8541605f7ee55f08225526be88ce57.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.741ex; height:2.176ex;" alt="{\displaystyle F}" loading="lazy"></span>.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Geschichte">Geschichte</h2></div>
<p>Weyl veröffentlichte 1916 als Erster eine Anwendung von Exponentialsummen in der Zahlentheorie (siehe <a href="Gleichverteilung_modulo_1" title="Gleichverteilung modulo 1">Gleichverteilung modulo 1</a>).<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> 1921 entwickelte er eine Methode um Weyl-Summen abzuschätzen, welche heute als <i>Weyls Methode</i> bezeichnet wird.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>
</p><p>1921<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> und 1922<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> veröffentlichte <a href="Johannes_van_der_Corput" title="Johannes van der Corput">Johannes van der Corput</a> zwei Arbeiten, aus der eine weitere Methode zur Abschätzung von Exponentialsummen hervorging und heute als <i>Van der Corputs Methode</i> bezeichnet wird.
</p><p>1935<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> und 1936<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> veröffentlichte Iwan Winogradow eine weitere Methode zur Abschätzung von Weyl-Summen.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> Zusätzlich veröffentlichte er 1937 eine Methode zur Abschätzung von Exponentialsummen mit <a href="Primzahl" title="Primzahl">Primzahlen</a>.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> Beide Methoden werden heute als <i>Winogradows Methode</i> bezeichnet.
</p>
<div class="mw-heading mw-heading2"><h2 id="Literatur">Literatur</h2></div>
<ul><li>Henryk Iwaniec und Emmanuel Kowalski: <cite style="font-style:italic">Analytic Number Theory</cite>. In: American Mathematical Society (Hrsg.): <cite style="font-style:italic">Colloquium Publications</cite>. <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em"> </span>53</span>, 2004, ISBN 0-8218-3633-1, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>197–227</span>.<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rfr_id=info:sid/de.wikipedia.org:Exponentialsumme&rft.atitle=Analytic+Number+Theory&rft.au=Henryk+Iwaniec+und+Emmanuel+Kowalski&rft.btitle=Colloquium+Publications&rft.date=2004&rft.genre=book&rft.isbn=0821836331&rft.pages=197-227&rft.volume=53" style="display:none"> </span></li>
<li>Arkhipov, G. I. und Chubarikov, V. N. und Karatsuba, A. A.: <cite style="font-style:italic">Trigonometric sums in number theory and analysis. Transl. from the Russian</cite>. In: Berlin: Walter de Gruyter (Hrsg.): <cite style="font-style:italic">De Gruyter Expo. Math.</cite> <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em"> </span>39</span>, 2004, ISBN 3-11-019798-7, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1515/9783110197983">10.1515/9783110197983</a></span>.<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rfr_id=info:sid/de.wikipedia.org:Exponentialsumme&rft.atitle=Trigonometric+sums+in+number+theory+and+analysis.+Transl.+from+the+Russian&rft.au=Arkhipov%2C+G.+I.+und+Chubarikov%2C+V.+N.+und+Karatsuba%2C+...&rft.btitle=De+Gruyter+Expo.+Math.&rft.date=2004&rft.doi=10.1515%2F9783110197983&rft.genre=book&rft.isbn=3110197987&rft.volume=39" style="display:none"> </span></li></ul>
<div class="mw-heading mw-heading2"><h2 id="Einzelnachweise">Einzelnachweise</h2></div>
<ol class="references">
<li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><span class="cite">B. M. Bredikhin: <a rel="nofollow" class="external text" href="https://encyclopediaofmath.org/index.php?title=Weyl_sum&oldid=44693"><i>Weyl sum.</i></a> In: <i>encyclopediaofmath.org.</i> Encyclopedia of Mathematics,<span class="Abrufdatum"> abgerufen am 8. Januar 2023</span>.</span><span style="display: none;" class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2Fde.wikipedia.org%3AExponentialsumme&rft.title=Weyl+sum&rft.description=Weyl+sum&rft.identifier=https%3A%2F%2Fencyclopediaofmath.org%2Findex.php%3Ftitle%3DWeyl_sum%26oldid%3D44693&rft.creator=B.+M.+Bredikhin&rft.publisher=Encyclopedia+of+Mathematics"> </span></span>
</li>
<li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><span class="cite">A. A. Karatsuba: <a rel="nofollow" class="external text" href="https://encyclopediaofmath.org/wiki/Trigonometric_sum"><i>Trigonometric sum.</i></a> In: <i>encyclopediaofmath.org.</i> Encyclopedia of Mathematics,<span class="Abrufdatum"> abgerufen am 8. Januar 2023</span>.</span><span style="display: none;" class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2Fde.wikipedia.org%3AExponentialsumme&rft.title=Trigonometric+sum&rft.description=Trigonometric+sum&rft.identifier=https%3A%2F%2Fencyclopediaofmath.org%2Fwiki%2FTrigonometric_sum&rft.creator=A.+A.+Karatsuba&rft.publisher=Encyclopedia+of+Mathematics"> </span></span>
</li>
<li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text">Hermann Weyl: <cite style="font-style:italic">Über die Gleichverteilung von Zahlen mod. Eins</cite>. In: <cite style="font-style:italic">Math. Ann.</cite> <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em"> </span>77</span>, 1916, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>313–352</span>.<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rfr_id=info:sid/de.wikipedia.org:Exponentialsumme&rft.atitle=%C3%9Cber+die+Gleichverteilung+von+Zahlen+mod.+Eins&rft.au=Hermann+Weyl&rft.btitle=Math.+Ann.&rft.date=1916&rft.genre=book&rft.pages=313-352&rft.volume=77" style="display:none"> </span></span>
</li>
<li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text">Hermann Weyl: <cite style="font-style:italic">Zur Abschatzung von <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \zeta (1+t\mathrm {i} )}">
<semantics>
<mrow class="MJX-TeXAtom-ORD">
<mstyle displaystyle="true" scriptlevel="0">
<mi>ζ<!-- ζ --></mi>
<mo stretchy="false">(</mo>
<mn>1</mn>
<mo>+</mo>
<mi>t</mi>
<mrow class="MJX-TeXAtom-ORD">
<mi mathvariant="normal">i</mi>
</mrow>
<mo stretchy="false">)</mo>
</mstyle>
</mrow>
<annotation encoding="application/x-tex">{\displaystyle \zeta (1+t\mathrm {i} )}</annotation>
</semantics>
</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/1d418e3081bfc2ddd0d5db58c4cd25281514a866.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:8.394ex; height:2.843ex;" alt="{\displaystyle \zeta (1+t\mathrm {i} )}" loading="lazy"></span></cite>. In: <cite style="font-style:italic">Math. Zeit.</cite> <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em"> </span>10</span>, 1921, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>88–101</span>.<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rfr_id=info:sid/de.wikipedia.org:Exponentialsumme&rft.atitle=Zur+Abschatzung+von+&rft.au=Hermann+Weyl&rft.btitle=Math.+Zeit.&rft.date=1921&rft.genre=book&rft.pages=88-101&rft.volume=10" style="display:none"> </span></span>
</li>
<li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text">J. G. van der Corput: <cite style="font-style:italic">Zahlentheoretische Abschätzungen</cite>. In: <cite style="font-style:italic">Mathematische Annalen</cite>. <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em"> </span>84</span>, 1921, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>53–79</span> (<a rel="nofollow" class="external text" href="https://eudml.org/doc/158879">eudml.org</a>).<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rfr_id=info:sid/de.wikipedia.org:Exponentialsumme&rft.atitle=Zahlentheoretische+Absch%C3%A4tzungen&rft.au=J.+G.+van+der+Corput&rft.btitle=Mathematische+Annalen&rft.date=1921&rft.genre=book&rft.pages=53-79&rft.volume=84" style="display:none"> </span></span>
</li>
<li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a></span> <span class="reference-text">J. G. van der Corput: <cite style="font-style:italic">Verschärfung der Abschätzung beim Teilerproblem</cite>. In: <cite style="font-style:italic">Math. Ann.</cite> <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em"> </span>87</span>, 1922, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>39–65</span>, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1007/BF01458035">10.1007/BF01458035</a></span>.<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rfr_id=info:sid/de.wikipedia.org:Exponentialsumme&rft.atitle=Versch%C3%A4rfung+der+Absch%C3%A4tzung+beim+Teilerproblem&rft.au=J.+G.+van+der+Corput&rft.btitle=Math.+Ann.&rft.date=1922&rft.doi=10.1007%2FBF01458035&rft.genre=book&rft.pages=39-65&rft.volume=87" style="display:none"> </span></span>
</li>
<li id="cite_note-7"><span class="mw-cite-backlink"><a href="#cite_ref-7">↑</a></span> <span class="reference-text">I. M . Winogradow: <cite style="font-style:italic">On Weyl's sums</cite>. In: <cite style="font-style:italic">Mat. Sbornik</cite>. <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em"> </span>42</span>, 1935, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>521–530</span>.<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rfr_id=info:sid/de.wikipedia.org:Exponentialsumme&rft.atitle=On+Weyl%27s+sums&rft.au=I.+M+.+Winogradow&rft.btitle=Mat.+Sbornik&rft.date=1935&rft.genre=book&rft.pages=521-530&rft.volume=42" style="display:none"> </span></span>
</li>
<li id="cite_note-8"><span class="mw-cite-backlink"><a href="#cite_ref-8">↑</a></span> <span class="reference-text">I. M . Winogradow: <cite style="font-style:italic">A new method of estimation of trigonometrical sums</cite>. In: <cite style="font-style:italic">Mat. Sbornik</cite>. <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em"> </span>43</span>, <span style="white-space:nowrap">Nr.<span style="display:inline-block;width:.2em"> </span>1</span>, 1936, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>175–188</span>.<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rfr_id=info:sid/de.wikipedia.org:Exponentialsumme&rft.atitle=A+new+method+of+estimation+of+trigonometrical+sums&rft.au=I.+M+.+Winogradow&rft.date=1936&rft.genre=journal&rft.issue=1&rft.jtitle=Mat.+Sbornik&rft.pages=175-188&rft.volume=43" style="display:none"> </span></span>
</li>
<li id="cite_note-9"><span class="mw-cite-backlink"><a href="#cite_ref-9">↑</a></span> <span class="reference-text">Henryk Iwaniec und Emmanuel Kowalski: <cite style="font-style:italic">Analytic Number Theory</cite>. In: American Mathematical Society (Hrsg.): <cite style="font-style:italic">Colloquium Publications</cite>. <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em"> </span>53</span>, 2004, ISBN 0-8218-3633-1, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>197–227</span>.<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rfr_id=info:sid/de.wikipedia.org:Exponentialsumme&rft.atitle=Analytic+Number+Theory&rft.au=Henryk+Iwaniec+und+Emmanuel+Kowalski&rft.btitle=Colloquium+Publications&rft.date=2004&rft.genre=book&rft.isbn=0821836331&rft.pages=197-227&rft.volume=53" style="display:none"> </span></span>
</li>
<li id="cite_note-10"><span class="mw-cite-backlink"><a href="#cite_ref-10">↑</a></span> <span class="reference-text">I. M . Winogradow: <cite style="font-style:italic">The representation of an odd number as a sum of three prime numbers</cite>. In: <cite style="font-style:italic">Dokl. Akad. Nauk SSSR</cite>. <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em"> </span>15</span>, <span style="white-space:nowrap">Nr.<span style="display:inline-block;width:.2em"> </span>2</span>, 1937, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>291–294</span>.<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rfr_id=info:sid/de.wikipedia.org:Exponentialsumme&rft.atitle=The+representation+of+an+odd+number+as+a+sum+of+three+prime+numbers&rft.au=I.+M+.+Winogradow&rft.date=1937&rft.genre=journal&rft.issue=2&rft.jtitle=Dokl.+Akad.+Nauk+SSSR&rft.pages=291-294&rft.volume=15" style="display:none"> </span></span>
</li>
<li id="cite_note-11"><span class="mw-cite-backlink"><a href="#cite_ref-11">↑</a></span> <span class="reference-text">I. M . Winogradow: <cite style="font-style:italic">Some theorems concerning the theory of prime numbers</cite>. In: <cite style="font-style:italic">Mat. Sb.</cite> <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em"> </span>44</span>, <span style="white-space:nowrap">Nr.<span style="display:inline-block;width:.2em"> </span>2</span>, 1937, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>179–196</span>.<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rfr_id=info:sid/de.wikipedia.org:Exponentialsumme&rft.atitle=Some+theorems+concerning+the+theory+of+prime+numbers&rft.au=I.+M+.+Winogradow&rft.date=1937&rft.genre=journal&rft.issue=2&rft.jtitle=Mat.+Sb.&rft.pages=179-196&rft.volume=44" style="display:none"> </span></span>
</li>
</ol></div><!--htdig_noindex--><div><div class="zim-footer">
Dieser Artikel wurde von <a class="external text" title="Zuletzt bearbeitet am 2024-10-25" href="https://de.wikipedia.org/wiki/?title=Exponentialsumme&oldid=249747668">Wikipedia</a> herausgegeben. Der Text ist unter <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.de">Creative Commons Attribution-Share Alike 4.0</a> verfügbar, sofern nicht anders angegeben. Für die Mediendateien können zusätzliche Bedingungen gelten.
</div>
</div><!--/htdig_noindex--></div>
</div>
</main>
</div>
</div>
</div>
<script src="./_webp_/webpHandler.js"></script>
</body></html>