| Some definitions of interest. |
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eqfun_p | Def IsEqFun(T;eq) == x,y:T. (x eq y)  x = y |
| | Thm* T:Type, eq:(T T  ). IsEqFun(T;eq) Prop |
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assert | Def b == if b True else False fi |
| | Thm* b: . b Prop |
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iff | Def P  Q == (P  Q) & (P  Q) |
| | Thm* A,B:Prop. (A  B) Prop |
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is_discrete | Def A Discrete == x,y:A. Dec(x = y) |
| | Thm* A:Type. (A Discrete) Prop |