Results 31 to 40 of about 4,395,218 (46)

On upper modular subalgebras of a Lie algebra. [PDF]

open access: yes, 2004
This paper is a further contribution to the extensive study by a number of authors of the subalgebra lattice of a Lie algebra. We give some necessary and some sufficient conditions for a subalgebra to be upper modular.
Bowman, Kevin   +2 more
core   +1 more source

Degree of Satisfiability in Heyting Algebras [PDF]

open access: yes
Given a finite structure $M$ and property $p$, it is a natural to study the degree of satisfiability of $p$ in $M$; i.e. to ask: what is the probability that uniformly randomly chosen elements in $M$ satisfy $p$?
Kocsis, Zoltan A.   +1 more
core   +1 more source

ON CYCLIC SYMMETRIC HEYTING ALGEBRAS

open access: yes, 2001
In this work we investigate the variety of k-cyclic symmetric Heyting algebras, k a positive integer. We characterize the simple objects of this variety and we describe the lattice of subvarieties in the linear case.
J. P. Díaz Varela   +4 more
core  

The temporal Heyting calculus

open access: yes
This thesis studies Esakia’s temporal Heyting calculus tHC, a temporal intuitionistic modal logic, by employing algebraic, topological, and frame-theoretic methods.
Alvarez, David Quinn
core  

An exploration of weak Heyting algebras: Characterization and properties [PDF]

open access: yesInternational Journal of Approximate Reasoning
This paper explores weak Heyting algebras, an extension of complete Heyting algebras, focusing on characterizing this concept and identifying essential properties in terms of implication operators. The main emphasis is on unraveling the defining features
Francisco Perez Gámez
exaly   +2 more sources

Profinite bi-Heyting algebras

open access: yesAlgebra Universalis
A poset 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 ∈ X. We show that a bi-Heyting algebra is profinite if and only if it is isomorphic to the lattice of upsets of a ...
Tasiou, Lydia
exaly   +2 more sources
Some of the next articles are maybe not open access.

Congruences on near-Heyting algebras

Algebra Universalis, 2018
Luciano Javier Gonzalez
exaly  

Heyting Algebras with a Dual Lattice Endomorphism

Zeitschrift Für Mathematische Logik Und Grundlagen Der Mathematik, 1987
Hanamantagouda P Sankappanavar
exaly  

Grothendieck-like duality for Heyting algebras

Algebra Universalis, 2002
Antonio di Nola
exaly  

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