Micron Document




Dis-unification
──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
top
Dis-unification, in computer science and logic, is an algorithmic process of solving inequations between symbolic expressions.

Contents


──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────

Publications on dis-unification

• citerefalain-colmerauer1984Alain Colmerauer (1984). "Equations and Inequations on Finite and Infinite Trees". In ICOT (ed.). Proc. Int. Conf. on Fifth Generation Computer Systems. pp. 85–99.
• citerefhubert-comon1986Hubert Comon (1986). "Sufficient Completeness, Term Rewriting Systems and 'Anti-Unification'". Proc. 8th International Conference on Automated Deduction. LNCS. Vol. 230. Springer. pp. 128–140. "Anti-Unification" here refers to inequation-solving, a naming which nowadays has become quite unusual, cf. Anti-unification (computer science).
• citerefclaude-kirchnerpierre-lescanne1987Claude Kirchner; Pierre Lescanne (1987). "Solving Disequations". Proc. LICS. pp. 347–352.
• citerefclaude-kirchner-and-pierre-lescanne1987Claude Kirchner and Pierre Lescanne (1987). Solving disequations (Research Report). INRIA.
• citerefhubert-comon1988Hubert Comon (1988). Unification et disunification: Théorie et applications (PDF) (Ph.D.). I.N.P. de Grenoble.
• citerefhubert-comonpierre-lescanne1989Hubert Comon; Pierre Lescanne (Mar–Apr 1989). "Equational Problems and Disunification". J. Symb. Comput. 7 (3–4): 371–425. CiteSeerX 10.1.1.139.4769. doi:10.1016/S0747-7171(89)80017-3.
• citerefcomon-hubert1990Comon, Hubert (1990). "Equational Formulas in Order-Sorted Algebras". Proc. ICALP. Comon shows that the first-order logic theory of equality and sort membership is decidable, that is, each first-order logic formula built from arbitrary function symbols, "=" and "∈", but no other predicates, can effectively be proven or disproven. Using the logical negation (¬), non-equality (≠) can be expressed in formulas, but order relations (<) cannot. As an application, he proves sufficient completeness of term rewriting systems.
• citerefhubert-comon1991Hubert Comon (1991). "Disunification: A Survey". In Jean-Louis Lassez; Gordon Plotkin (eds.). Computational Logic — Essays in Honor of Alan Robinson. MIT Press. pp. 322–359.
• citerefhubert-comon1993Hubert Comon (1993). "Complete Axiomatizations of some Quotient Term Algebras" (PDF). Proc. 18th Int. Coll. on Automata, Languages, and Programming. LNCS. Vol. 510. Springer. pp. 148–164. Retrieved 29 June 2013.

See also

Unification (computer science): solving equations between symbolic expressions
Constraint logic programming: incorporating solving algorithms for particular classes of inequalities (and other relations) into Prolog
Constraint programming: solving algorithms for particular classes of inequalities
Simplex algorithm: solving algorithm for linear inequations
Inequation: kinds of inequations in mathematics in general, including a brief section on solving
Equation solving: how to solve equations in mathematics