| Some definitions of interest. |
|
iff | Def P Q == (P Q) & (P Q) |
| | Thm* A,B:Prop. (A B) Prop |
|
int_seg | Def {i..j} == {k:| i k < j } |
| | Thm* m,n:. {m..n} Type |
|
iter_via_intseg | Def Iter(f;u) i:{a..b}. e(i)
Def == if a<b f((Iter(f;u) i:{a..b-1}. e(i)),e(b-1)) else u fi
Def (recursive) |
| | Thm* f:(AAA), u:A, a,b:, e:({a..b}A). (Iter(f;u) i:{a..b}. e(i)) A |
|
nat | Def == {i:| 0i } |
| | Thm* Type |
|
not | Def A == A False |
| | Thm* A:Prop. (A) Prop |