Zulip Chat Archive
Stream: new members
Topic: Disjunctive syllogism
Luiz Kazuo Takei (Sep 30 2025 at 18:31):
I have the impression I saw this somewhere but I cannot find it. Suppose I have
h1 : ¬ P
h2 : P ∨ Q
is there a single lemma that allows me combine them to produce Q?
Aaron Liu (Sep 30 2025 at 18:32):
Luiz Kazuo Takei (Sep 30 2025 at 18:33):
Thanks!
Last updated: Dec 20 2025 at 21:32 UTC