P
A:Prop. Dec(A) 
Prop
c:
. a = b
ca,b:. (a | b) Prop
== {i:| 0 < i } TypeA == A 
FalseA:Prop. (A) Prop| Some definitions of interest. | |
| decidable | Def Dec(P) == P P |
| Thm* A:Prop. Dec(A) Prop | |
| divides | Def b | a == c:. a = bc |
| Thm* a,b:. (a | b) Prop | |
| nat_plus | Def == {i:| 0 < i } |
| Thm* Type | |
| not | Def A == A False |
| Thm* A:Prop. (A) Prop |
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