<div id="insert"></div> <script src="http://math.chapman.edu/~jipsen/structures/ua.js"></script> <script>init("CSgrp",5,{commutative:true,associative:true})</script>
Trace: • topological_groups • commutative_regular_rings • lattice-ordered_semigroups • abelian_groups • properties • weakly_representable_relation_algebras • transitive_relations • complemented_modular_lattices • finite_commutative_semigroups