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A Notion of Convergence in Fuzzy Partially Ordered Sets [PDF]

open access: yesMathematics, 2020
The notion of sequential convergence in fuzzy partially ordered sets, under the name oF-convergence, is well known. Our aim in this paper is to introduce and study a notion of net convergence, with respect to the fuzzy order relation, named o-convergence,
Dimitrios Georgiou   +2 more
doaj   +2 more sources

SUBLATTICES OF LATTICES OF ORDER-CONVEX SETS, III: THE CASE OF TOTALLY ORDERED SETS [PDF]

open access: yesInternational Journal of Algebra and Computation, 2004
For a partially ordered set P, let Co(P) denote the lattice of all order-convex subsets of P. For a positive integer n, we denote by [Formula: see text] (resp., SUB(n)) the class of all lattices that can be embedded into a lattice of the form [Formula: see text] where <Ti|i∈I> is a family of chains (resp., chains with at most n elements).
Marina V. Semenova, Friedrich Wehrung
core   +12 more sources

Order Filter Model for Minuscule Plücker Relations [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
The Plücker relations which define the Grassmann manifolds as projective varieties are well known. Grass-mann manifolds are examples of minuscule flag manifolds.
David C Lax
doaj   +1 more source

Lattice structure of Grassmann-Tamari orders [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2015
The Tamari order is a central object in algebraic combinatorics and many other areas. Defined as the transitive closure of an associativity law, the Tamari order possesses a surprisingly rich structure: it is a congruence-uniform lattice.
Thomas McConville
doaj   +1 more source

Mechanical characterisation of novel aperiodic lattice structures

open access: yesMaterials & Design, 2023
This paper compares the mechanical properties of a class of lattice metamaterials with aesthetically-pleasing patterns that are governed by the mathematics of aperiodic order.
Chikwesiri Imediegwu   +5 more
doaj   +1 more source

An Order-Theoretic Study on Formal Concept Analysis

open access: yesAxioms, 2023
This paper employs an order-theoretic framework to explore the intricacies of formal concepts. Initially, we establish a natural correspondence among formal contexts, preorders, and the resulting partially ordered sets (posets).
Yu-Ru Syau, En-Bing Lin, Churn-Jung Liau
doaj   +1 more source

A maximal chain approach to topology and order

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
On ordered sets (posets, lattices) we regard topologies (or, more general convergence structures) which on any maximal chain of the ordered set induce its own interval topology.
R. Vainio
doaj   +1 more source

Symmetries among Multivariate Information Measures Explored Using Möbius Operators

open access: yesEntropy, 2019
Relations between common information measures include the duality relations based on Möbius inversion on lattices, which are the direct consequence of the symmetries of the lattices of the sets of variables (subsets ordered by inclusion).
David J. Galas, Nikita A. Sakhanenko
doaj   +1 more source

From lattices to Hv-matrices

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
In this paper we study the concept of sets of elements, related to results of an associative binary operation. We discuss this issue in the context of matrices and lattices.
Křehlík Štěpán, Novák Michal
doaj   +1 more source

Order isomorphisms between bases of topologies

open access: yesExtracta Mathematicae, 2022
In this paper we will study the representations of isomorphisms between bases of topological spaces. It turns out that the perfect setting for this study is that of regular open subsets of complete metric spaces, but we have been able to show some ...
Javier Cabello Sánchez
doaj  

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