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Topic: [isabelle] New in the AFP: Birkhoff's Representation Theo...


view this post on Zulip Email Gateway (Dec 06 2022 at 08:16):

From: Tobias Nipkow <nipkow@in.tum.de>
Birkhoff's Representation Theorem for Finite Distributive Lattices
Matthew Doty

This theory proves a theorem of Birkhoff that asserts that any finite
distributive lattice is isomorphic to the set of down-sets of that lattice's
join-irreducible elements. The isomorphism preserves order, meets and joins as
well as complementation in the case the lattice is a Boolean algebra. A
consequence of this representation theorem is that every finite Boolean algebra
is isomorphic to a powerset algebra.

https://www.isa-afp.org/entries/Birkhoff_Finite_Distributive_Lattices.html

Enjoy!
smime.p7s


Last updated: Apr 25 2024 at 20:15 UTC