<div id="insert"></div> <script src="http://math.chapman.edu/~jipsen/structures/ua.js"></script> <script>init("Sgrp",4,{associative:true})</script>
Trace: • commutative_lattice-ordered_monoids • commutative_residuated_partially_ordered_monoids • finite_commutative_monoids • finite_semigroups