| Who Cites res lambda? |
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res_lambda | Def res_lambda('a;'b;x.P(x);x.f(x)) == x:'a. if P(x) then f(x) else arb('b) fi |
| | Thm* 'a,'b:S, P:('a  ), f:('a 'b). res_lambda('a;'b;x.P(x);x.f(x)) 'a 'b |
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arb | Def arb(T) == InjCase(lem(T); x. x, "uu") |
| | Thm* T:S. arb(T) T |
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bif | Def bif(b; bx.x(bx); by.y(by)) == if b x(*) else y( x.x) fi |
| | Thm* A:Type, b: , x:(b A), y:(( b) A). bif(b; bx.x(bx); by.y(by)) A |
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tlambda | Def ( x:T. b(x))(x) == b(x) |