The agum package

[ Tags: algebra, gpl, library, program ] [ Propose Tags ]

The unification problem is given the problem statement t =? t', find a most general substitution s such that s(t) = s(t') modulo the axioms of an Abelian group. The matching problem is to find a most general substitution s such that s(t) = t' modulo the axioms. Substitition s is more general than s' if there is a substitition s" such that s' = s" o s.

[Skip to Readme]


Versions 1.0, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6
Change log ChangeLog
Dependencies base (<=, containers [details]
License GPL
Category Algebra.AbelianGroup
Uploaded Sat Aug 29 13:13:13 UTC 2009 by JohnRamsdell
Distributions NixOS:2.6
Executables agum
Downloads 2248 total (18 in the last 30 days)
Rating 0.0 (0 ratings) [clear rating]
  • λ
  • λ
  • λ
Status Docs uploaded by user
Build status unknown [no reports yet]
Hackage Matrix CI




Maintainer's Corner

For package maintainers and hackage trustees

Readme for agum-2.0

[back to package description]
This package contains a library for unification and matching in
Abelian groups and a program that exercises the library.

$ agum
Abelian group unification and matching -- :? for help
agum> 2x+y=3z
Problem:   2x + y = 3z
Unifier:   [x : g0,y : -2g0 + 3g2,z : g2]
Matcher:   [x : g0,y : -2g0 + 3z]

agum> 2x=x+y
Problem:   2x = x + y
Unifier:   [x : g1,y : g1]
Matcher:   no solution

agum> 64x-41y=a
Problem:   64x - 41y = a
Unifier:   [x : g0,y : g1,a : 64g0 - 41g1]
Matcher:   [x : -16a - 41g6,y : -25]

agum> :quit