Definitions | t T, x:A. B(x),  x,y. t(x;y), , t.2, t.1,  , = , x f y, P & Q, g hgrp, |g|, x:A. B(x), P  Q, e, *, FunThru2op(A;B;opa;opb;f), Inj(A;B;f), IsMonHom{M1,M2}(f), IsMonHomInj(g;h;f), |g| , P  Q, P   Q, RelsIso(T;T';x,y.R(x;y);x,y.R'(x;y);f), x(s1,s2), Mon, AbMon, OCMon, OGrp |