| Some definitions of interest. |
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int_seg | Def {i..j } == {k: | i k < j } |
| | Thm* m,n: . {m..n } Type |
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inv_funs_2 | Def InvFuns(A;B;f;g) == ( x:A. g(f(x)) = x) & ( y:B. f(g(y)) = y) |
| | Thm* f:(A B), g:(B A). InvFuns(A;B;f;g) Prop |
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lt_int | Def i< j == if i<j true ; false fi |
| | Thm* i,j: . (i< j)  |
|
nat | Def == {i: | 0 i } |
| | Thm* Type |