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The maps to symbol, ↦, is a rightward arrow protruding from a vertical bar. It is used in mathematics and in computer science to denote functions. In Z notation, a specification language used in software development,cite-ref-1[1] this symbol is called the maplet arrow and the expression x ↦ y is called a maplet. In separation logic it denotes the contents of a specific cell of memory.

In the Unicode character set, the symbol is code point U+21A6.cite-ref-2[2]

• See also

• References

• Arrow notation – e.g., x ↦ ↦ x + 1 {\displaystyle x\mapsto x+1} , also known as map

cite-note-11. ↑ citerefmiku-iakmiroslav-ad-mythomas-seidmann1997Mikušiak, Luboš; Miroslav Adámy; Thomas Seidmann (1997). "Publishing formal specifications in Z notation on world wide web". TAPSOFT '97: Theory and Practice of Software Development. Lecture Notes in Computer Science. Vol. 1214. pp. 871–874. doi:10.1007/BFb0030650. ISBN 978-3-540-62781-4.

cite-note-22. ↑ Unicode Character 'RIGHTWARDS ARROW FROM BAR' (U+21A6)