<div id="insert"></div> <script src="http://math.chapman.edu/~jipsen/structures/ua.js"></script> <script>init("CSgrpZ",5,{associative:true,commutative:true,zero:true})</script>
Trace: • commutative_partially_ordered_semigroups • residuated_partially_ordered_semigroups • finite_commutative_binars_with_identity • distributive_lattice_ordered_semigroups • boolean_modules_over_a_relation_algebra • finite_commutative_semigroups_with_zero