P
A:Prop. Dec(A) 
Prop
P 
PA:Prop. SqStable(A) PropA == A FalseA:Prop. (A) PropT == {:True| T }A:Prop. A Prop| Who Cites decidable? | |
| decidable | Def Dec(P) == P P |
| Thm* A:Prop. Dec(A) Prop | |
| sq_stable | Def SqStable(P) == P P |
| Thm* A:Prop. SqStable(A) Prop | |
| not | Def A == A False |
| Thm* A:Prop. (A) Prop | |
| squash | Def T == {:True| T } |
| Thm* A:Prop. A Prop |
About:
 |  |  |  |  |
 |  |  |  |  |