| Who Cites iff? |
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iff |
Def P  Q == (P  Q) & (P  Q) |
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| Thm* A,B:Prop. (A  B) Prop |
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imin |
Def imin(a;b) == if a b a else b fi |
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| Thm* a,b: . imin(a;b)  |
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le |
Def A B == B < A |
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| Thm* i,j: . i j Prop |
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rev_implies |
Def P  Q == Q  P |
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| Thm* A,B:Prop. (A  B) Prop |
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le_int |
Def i j ==  j < i |
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| Thm* i,j: . i j  |
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not |
Def A == A  False |
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| Thm* A:Prop. ( A) Prop |
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lt_int |
Def i < j == if i < j true ; false fi |
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| Thm* i,j: . i < j  |
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bnot |
Def  b == if b false else true fi |
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| Thm* b: .  b  |