Show all pages that mention first-order classes
Trace: • finite_commutative_binars_with_identity • commutative_semigroups • commutative_rings_with_identity • finite_commutative_ordered_semigroups • commutative_partially_ordered_semigroups • regular_semigroups • commutative_integral_ordered_monoids • terms • universal_formulas • first-order_classes