Def AntiSym(T;x,y.R(x;y)) == x,y:T. R(x;y)  R(y;x)  x = y

is mentioned by

Thm* R,R':(TTProp). Thm* (x,y:T. R(x,y)  R'(x,y)) Thm*  Thm* (AntiSym(T;x,y.R(x,y))  AntiSym(T;x,y.R'(x,y)))	[anti_sym_functionality_wrt_iff]
Def Order(T;x,y.R(x;y)) Def == Refl(T;x,y.R(x;y)) & (Trans x,y:T. R(x;y)) & AntiSym(T;x,y.R(x;y))	[order]

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