x,y:T. 
(x eq y) 
x = yT:Type, eq:(T
T
). IsEqFun(T;eq) 
Propb == if b
True else False fib:. b Prop Q == (P 
Q) & (P Q)A,B:Prop. (A B) Prop Q == Q PA,B:Prop. (A B) Prop| Who Cites eqfun p? | |
| eqfun_p | Def IsEqFun(T;eq) == x,y:T. (x eq y) x = y |
| Thm* T:Type, eq:(TT). IsEqFun(T;eq) Prop | |
| assert | Def b == if b True else False fi |
| Thm* b:. b Prop | |
| iff | Def P Q == (P Q) & (P Q) |
| Thm* A,B:Prop. (A B) Prop | |
| rev_implies | Def P Q == Q P |
| Thm* A,B:Prop. (A B) Prop |
| Syntax: | IsEqFun(T;eq) | has structure: | eqfun_p(T; eq) |
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