| | Some definitions of interest. |
|
| int_seg | Def {i..j } == {k: | i k < j } |
| | | Thm* m,n: . {m..n } Type |
|
| nat | Def == {i: | 0 i } |
| | | Thm* Type |
|
| nat_plus | Def  == {i: | 0<i } |
| | | Thm*  Type |
|
| not | Def A == A  False |
| | | Thm* A:Prop. ( A) Prop |
|
| one_one_corr_2 | Def A ~ B == f:(A B), g:(B A). InvFuns(A;B;f;g) |
| | | Thm* A,B:Type. (A ~ B) Prop |