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Displaying 61 – 80 of 216

Free trees and the optimal bound in Wehrung's theorem

Pavel Růžička (2008)

Fundamenta Mathematicae

We prove that there is a distributive (∨,0,1)-semilattice of size ℵ₂ such that there is no weakly distributive (∨,0)-homomorphism from $C o n_{c} A$ to with 1 in its range, for any algebra A with either a congruence-compatible structure of a (∨,1)-semi-lattice or a congruence-compatible structure of a lattice. In particular, is not isomorphic to the (∨,0)-semilattice of compact congruences of any lattice. This improves Wehrung’s solution of Dilworth’s Congruence Lattice Problem, by giving the best cardinality...

Generalized $P_{0}$ -lattices of order ω+

T. Traczyk, W. Zarębski (1976)

Colloquium Mathematicae

Generalized $P_{1}$ - and $P_{2}$ -lattices of order ω+

W. Zarębski (1977)

Colloquium Mathematicae

Generating subsets of distributive lattices.

Hans-Christian Reichel (1976)

Journal für die reine und angewandte Mathematik

Graph isomorphisms of modular multilattices

Mária Tomková (1980)

Mathematica Slovaca

Idempotent distributive semirings II..

F. Pastijn (1983)

Semigroup forum

Imbedding locally convex lattices into compact lattices

Albert R. Stralka (1974)

Colloquium Mathematicae

Indecomposable matrices over a distributive lattice

Yi Jia Tan (2006)

Czechoslovak Mathematical Journal

In this paper, the concepts of indecomposable matrices and fully indecomposable matrices over a distributive lattice $L$ are introduced, and some algebraic properties of them are obtained. Also, some characterizations of the set $F_{n} (L)$ of all $n \times n$ fully indecomposable matrices as a subsemigroup of the semigroup $H_{n} (L)$ of all $n \times n$ Hall matrices over the lattice $L$ are given.

Injektive Objekte in gewissen Kategorien der Verbände

Josef Niederle (1974)

Archivum Mathematicum

Isometries of multilattice groups

Ján Jakubík, Milan Kolibiar (1983)

Czechoslovak Mathematical Journal

Lattice socles and radicals described by a Galois connnection

Ladislav Beran (1971)

Acta Universitatis Carolinae. Mathematica et Physica

Lattices of lower finite breadth.

A.A. Forkeotes (1995)

Semigroup forum

Lattices of relative colour-families and antivarieties

Aleksandr Kravchenko (2007)

Discussiones Mathematicae - General Algebra and Applications

We consider general properties of lattices of relative colour-families and antivarieties. Several results generalise the corresponding assertions about colour-families of undirected loopless graphs, see [1]. Conditions are indicated under which relative colour-families form a lattice. We prove that such a lattice is distributive. In the class of lattices of antivarieties of relation structures of finite signature, we distinguish the most complicated (universal) objects. Meet decompositions in lattices...

Currently displaying 61 – 80 of 216

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Displaying 61 – 80 of 216

Free trees and the optimal bound in Wehrung's theorem

Generalized $P_{0}$ -lattices of order ω+

Generalized $P_{1}$ - and $P_{2}$ -lattices of order ω+

Generating subsets of distributive lattices.

Graph isomorphisms of modular multilattices

Idempotent distributive semirings II..

Imbedding locally convex lattices into compact lattices

Indecomposable matrices over a distributive lattice

Injektive Objekte in gewissen Kategorien der Verbände

Isometries of multilattice groups

Lattice socles and radicals described by a Galois connnection

Lattices of lower finite breadth.

Lattices of relative colour-families and antivarieties

Lattices with a third distributive operation

Le spectre d'un anneau dans l'algèbre constructive et applications à la dimension

Linear Congruences in Distributive Lattices

Lines in directed distributive multilattices

Local polynomial functions on lattices and universal algebras

Measurable Refinement Monoids and Applications to Distributive Semilattices, Heyting Algebras, and Stone Spaces.

Médiane, distributivité, éloignements

Currently displaying 61 – 80 of 216