Irréfutabilité du tiers exclus

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Adrien Vannson 2022-05-16 23:41:30 +02:00
parent 97e0ead5fe
commit 3c95807b7b
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~~(F \/ ~F)
intro f.
cut ~F.
intro f2.
cut F \/ ~F.
assumption.
right.
assumption.
intro f2.
cut F \/ ~F.
assumption.
left.
assumption.