| Some definitions of interest. |
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iff | Def P  Q == (P  Q) & (P  Q) |
| | Thm* A,B:Prop. (A  B) Prop |
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linorder | Def Linorder(T;x,y.R(x;y)) == Order(T;x,y.R(x;y)) & Connex(T;x,y.R(x;y)) |
| | Thm* T:Type, R:(T T Prop). Linorder(T;x,y.R(x,y)) Prop |
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strict_part | Def strict_part(x,y.R(x;y);a;b) == R(a;b) & R(b;a) |
| | Thm* T:Type, R:(T T Prop), a,b:T. strict_part(x,y.R(x,y);a;b) Prop |
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not | Def A == A  False |
| | Thm* A:Prop. ( A) Prop |