Results 41 to 50 of about 10,642 (232)

Tight Representations of 0-𝐸-Unitary Inverse Semigroups

Abstract and Applied Analysis, 2011
We study the tight representation of a semilattice in {0,1} by some examples. Then we introduce the concept of the complex tight representation of an inverse semigroup 𝑆 by the concept of the tight representation of the semilattice of idempotents 𝐸 of 𝑆 ...
Bahman Tabatabaie Shourijeh, Asghar Jokar   +1 more
doaj   +1 more source

Relative annihilator-preserving congruence relations and relative annihilator-preserving homomorphisms in bounded distributive semilattices

Open Mathematics, 2014
In this paper we shall study a notion of relative annihilator-preserving congruence relation and relative annihilator-preserving homomorphism in the class of bounded distributive semilattices. We shall give a topological characterization of this class of
Celani Sergio A.
doaj   +1 more source

A Semi-lattice of Four-valued Literal-paraconsistent-paracomplete Logics

Bulletin of the Section of Logic, 2021
In this paper, we consider the class of four-valued literal-paraconsistent-paracomplete logics constructed by combination of isomorphs of classical logic CPC. These logics form a 10-element upper semi-lattice with respect to the functional embeddinig one
Natalya Tomova
doaj   +1 more source

On distances and metrics in discrete ordered sets [PDF]

Mathematica Bohemica, 2021
Discrete partially ordered sets can be turned into distance spaces in several ways. The distance functions may or may not satisfy the triangle inequality and restrictions of the distance to finite chains may or may not coincide with the natural ...
Stephan Foldes, Sándor Radeleczki
doaj   +1 more source

Finite semilattices with many congruences [PDF]

, 2018
For an integer $n\geq 2$, let NCSL$(n)$ denote the set of sizes of congruence lattices of $n$-element semilattices. We find the four largest numbers belonging to NCSL$(n)$, provided that $n$ is large enough to ensure that $|$NCSL$(n)|\geq 4$. Furthermore,
Czédli, Gábor
core   +2 more sources

Trees as semilattices

Discrete Mathematics, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Leonid Libkin, Vladimir Gurvich
openaire   +1 more source

APPROXIMATELY MULTIPLICATIVE MAPS FROM WEIGHTED SEMILATTICE ALGEBRAS [PDF]

Journal of the Australian Mathematical Society, 2012
We investigate which weighted convolution algebras ${ \ell }_{\omega }^{1} (S)$, where $S$ is a semilattice, are AMNM in the sense of Johnson [‘Approximately multiplicative functionals’, J. Lond. Math. Soc. (2) 34(3) (1986), 489–510]. We give an explicit
Yemon Choi
semanticscholar   +1 more source

Multi-argument specialization semilattices [PDF]

Mathematica Bohemica
If $X$ is a closure space with closure $K$, we consider the semilattice $(\mathcal P(X), \cup)$ endowed with a further relation $ x \sqsubseteq\{ y_1, y_2, \dots, y_n\} $ between elements of $\mathcal P(X)$ and finite subsets of $\mathcal P(X)$, whose ...
Paolo Lipparini
doaj   +1 more source

Simplicial homology and Hochschild cohomology of Banach semilattice algebras [PDF]

, 2006
The ${\ell}^1$-convolution algebra of a semilattice is known to have trivial cohom ology in degrees 1,2 and 3 whenever the coefficient bimodule is symmetric. We ex tend this result to all cohomology groups of degree $\geq 1$ with symmetric coef ficients.
Choi, Yemon
core   +3 more sources

The Existence and Stability of Solutions for Vector Quasiequilibrium Problems in Topological Order Spaces

Journal of Applied Mathematics, 2013
In a topological sup-semilattice, we established a new existence result for vector quasiequilibrium problems. By the analysis of essential stabilities of maximal elements in a topological sup-semilattice, we prove that for solutions of each vector quasi ...
Qi-Qing Song
doaj   +1 more source