Q == (P 
Q) & (P Q)
Thm* 
A,B:Prop. (A B) 
Prop
j < k == ij & j < k
B == 
B < A
Thm* i,j:
. ij Prop
== {i:| 0 < i }
Thm* Type
Q == Q P
Thm* A,B:Prop. (A B) Prop
A == A False
Thm* A:Prop. (A) Prop
| iff |
Def P Q == (P Q) & (P Q)
Thm* |
| lelt |
Def i j < k == ij & j < k
|
| le |
Def AB == B < A
Thm* |
| nat_plus |
Def == {i:| 0 < i }
Thm* |
| rev_implies |
Def P Q == Q P
Thm* |
| not |
Def A == A False
Thm* |
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