size(
a)(p) == Msize(
x.if p(x)
1 else 0 fi)
a:. size(a) 
(a
)
} == {k:
| i 
k < j }m,n:. {m..n} Type == {i:| 0i } Type
f:(AB), g:(BA). InvFuns(A;B;f;g)A,B:Type. (A ~ B) Prop| Some definitions of interest. | |
| boolsize | size(a)(p) == Msize(x.if p(x) 1 else 0 fi) |
| a:. size(a) (a) | |
| int_seg | } == {k:| i k < j } |
| m,n:. {m..n} Type | |
| nat | == {i:| 0i } |
| Type | |
| one_one_corr_2 | f:(AB), g:(BA). InvFuns(A;B;f;g) |
| A,B:Type. (A ~ B) Prop |
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