| Some definitions of interest. |
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deq | Def EqDecider(T) == eq:T T    x,y:T. x = y  (eq(x,y)) |
| | Thm* T:Type. EqDecider(T) Type |
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fpf | Def a:A fp-> B(a) == d:A List a:{a:A| (a d) } B(a) |
| | Thm* A:Type, B:(A Type). a:A fp-> B(a) Type |
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fpf-single | Def x : v == <[x], x.v> |
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fpf-sub | Def f g == x:A. x dom(f)  x dom(g) & f(x) = g(x) B(x) |