i,j:
. i > j 
Prop
Q == (P 
Q) & (P Q)A,B:Prop. (A B) Prop Q == Q PA,B:Prop. (A B) Prop| Who Cites gt? | |
| gt | Def i > j == j < i |
| Thm* i,j:. i > j Prop | |
| iff |
Def P Q == (P Q) & (P Q) |
| Thm* A,B:Prop. (A B) Prop | |
| rev_implies |
Def P Q == Q P |
| Thm* A,B:Prop. (A B) Prop |
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