Ajout de preuves

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Adrien Vannson 2022-05-10 13:57:02 +02:00
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commit e51762b03b
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((A -> A) -> B) -> B
intro f.
apply f.
intro x.
assumption.

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@ -1 +1,5 @@
A -> ~(~A)
intro x.
intro f.
apply f.
assumption.