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The Role of the Mizar Mathematical Library for Interactive Proof Development in Mizar. [PDF]

open access: yesJ Autom Reason, 2018
Bancerek G   +6 more
europepmc   +1 more source

Etale algebras over finite Heyting algebras

open access: yes
In this paper, we investigate the concept of local homeomorphism in Esakia spaces. We introduce the notion of etale Heyting H-algebra and establish category-theoretic duality for etale Heyting H-algebra in the case of finite Heyting algebra H. Furthermore, we give an identity that axiomatizes the variety of etale Heyting H-algebras when H is finite. We
openaire   +2 more sources

Profinite bi-Heyting algebras

open access: yesAlgebra universalis
Abstract A poset $${\mathbb {X}}$$ X is said to be zigzag image-finite, if the least updownset (i.e., both an upset and a downset) containing x is finite, for all $$x\in X.$$
openaire   +2 more sources

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