<div id="insert"></div> <script src="http://math.chapman.edu/~jipsen/structures/ua.js"></script> <script>init("SgrpZ",5,{associative:true,zero:true})</script>
Trace: • frames • fields • loops • function_rings • normed_vector_spaces • first-order_formulas • boolean_algebras_with_operators • ordered_fields • logics • finite_semigroups_with_zero