| Some definitions of interest. |
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equiv_rel | Def EquivRel x,y:T. E(x;y)
Def == Refl(T;x,y.E(x;y)) & (Sym x,y:T. E(x;y)) & (Trans x,y:T. E(x;y)) |
| | Thm* T:Type, E:(TTProp). (EquivRel x,y:T. E(x,y)) Prop |
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sq_stable | Def SqStable(P) == P P |
| | Thm* A:Prop. SqStable(A) Prop |
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squash | Def T == {:True| T } |
| | Thm* A:Prop. A Prop |