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Def Trans x,y:TE(x;y) == a,b,c:TE(a;b E(b;c E(a;c)

is mentioned by

Thm* R,R2:(TTProp).
Thm* Trans(T)(R2(_1,_2))
Thm* 
Thm* (x,y:T. (x R y (x R2 y))  (x,y:T. (x (R^*) y (x R2 y x = y)
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mb nat Sections MarkB generic Doc