Overalgebras

GAP routines to accompany the paper

Expansions of finite algebras and their congruence lattices (final version available at link.springer.com)

Overalgebras.g — GAP routines for building new finite algebras by pasting together isomorphic copies of transitive G-sets and adding new operations. The output is a general algebra file that can be loaded into the Universal Algebra Calculator, so you can analyze the algebra, draw its congruence lattice, etc.

gap2uacalc.g — a GAP program for converting groups and G-sets into general algebras for loading into the UACalc. See also, these instructions.

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