| Some definitions of interest. |
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gcd_p | Def GCD(a;b;y) == y | a & y | b & (z:. z | a & z | b z | y) |
| | Thm* a,b,y:. GCD(a;b;y) Prop |
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iff | Def P Q == (P Q) & (P Q) |
| | Thm* A,B:Prop. (A B) Prop |
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le | Def AB == B<A |
| | Thm* i,j:. (ij) Prop |
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not | Def A == A False |
| | Thm* A:Prop. (A) Prop |