Results 41 to 50 of about 203 (97)

Study of Pseudocomplemented Lattice

open access: yes, 2008
This thesis is submitted to the Department of Mathematics, Khulna University of Engineering & Technology in partial fulfillment of the requirements for the degree of Master of Philosophy in Mathematics, June 2008.Cataloged from PDF Version of Thesis ...
Rahman, Khaki Masudur
core  

Homomorphisms and endomorphisms in varieties of pseudocomplemented distributive lattices (with applications to Heyting algebras)

open access: yes, 1984
According to a result by K. B. Lee, the lattice of varieties of pseudocomplemented distributive lattices is the ω + 1 \omega + 1 chain B − 1
J. Sichler, V. Koubek, M. E. Adams
core   +1 more source

The pseudocomplementedness of modular lattices described by two 0-sublattices

open access: yes, 2023
In this article, we first characterize pseudocomplemented inductive modular lattices by using their two 0-sublattices. Then we use two 0-sublattices of a subgroup lattice to describe all locally cyclic abelian groups.
He, Peng, Wang, Xue-ping
core  

Some properties of complete congruence lattices

open access: yes, 1998
. For a complete lattice C, we consider the problem of establishing when the complete lattice of complete congruence relations on C is a complete sublattice of the complete lattices of join- or meet-complete congruence relations on C. We first argue that
R. Giacobazzi   +5 more
core   +1 more source

Permutation Lattices Revised

open access: yes, 1994
This paper shows how to compute efficiently meets and joins of permutations. The algorithms presented here have a worst case time of O(N2) and a space requirement of O(N).
Markowsky, George
core   +1 more source

Lattices of regular closed subsets of closure spaces

open access: yes, 2013
For a closure space (P,f) with f(\emptyset)=\emptyset, the closures of open subsets of P, called the regular closed subsets, form an ortholattice Reg(P,f), extending the poset Clop(P,f) of all clopen subsets.
Santocanale, Luigi   +3 more
core   +1 more source

Pseudocomplements of closure operators on posets

open access: yes, 2002
Some recent results provide sufficient conditions for complete lattices of closure operators on complete lattices, ordered pointwise, to be pseudocomplemented.
RANZATO, FRANCESCO
core   +1 more source

Special filters in bounded lattices

open access: yes
M. Sambasiva Rao recently investigated some sorts of special filters in distributive pseudocomplemented lattices. In our paper, we extend this study to lattices which need neither be distributive nor pseudocomplemented. For this sake, we define a certain
Länger, Helmut   +2 more
core   +1 more source

Local versions of some congruence properties in single algebras [PDF]

open access: yes, 2004
summary:We investigate some local versions of congruence permutability, regularity, uniformity and modularity. The results are applied to several examples including implication algebras, orthomodular lattices and relative pseudocomplemented ...
Länger, Helmut   +2 more
core  

Primes, Irreducibles and Extremal Lattices

open access: yes, 1992
This paper studies certain types of join and meet-irreducibles called coprimes and primes. These elements can be used to characterize certain types of lattices.
Markowsky, George
core   +1 more source

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