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Zulip Chat Archive

Stream: Is there code for X?

Topic: iff imp distrib


Kyle Miller (Mar 23 2023 at 17:27):

Do we have this trivial lemma anywhere already?

example (p q r : Prop) : (p → (q ↔ r)) ↔ ((p → q) ↔ (p → r)) := by tauto

Pedro Sánchez Terraf (Mar 23 2023 at 18:58):

It follows from distributivity of disjunction, if you have that one

Yaël Dillies (Mar 23 2023 at 20:14):

We have docs#himp_bihimp but not himp_bihimp_distrib. :frowning:


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