x:A. x 
B) & (x:B. x A)
} == {k:
| i 
k < j }m,n:. {m..n} Type
f:(A
B), g:(BA). InvFuns(A;B;f;g)A,B:Type. (A ~ B) Prop T }T:Type, a:T. {a:T} Type| Some definitions of interest. | |
| exteq | x:A. x B) & (x:B. x A) |
| int_seg | } == {k:| i k < j } |
| m,n:. {m..n} Type | |
| one_one_corr_2 | f:(AB), g:(BA). InvFuns(A;B;f;g) |
| A,B:Type. (A ~ B) Prop | |
| singleton | T } |
| T:Type, a:T. {a:T} Type |
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