Results 21 to 30 of about 682,797 (231)

Existence of local fractional integral equation via a measure of non-compactness with monotone property on Banach spaces

open access: yesAdvances in Difference Equations, 2020
In this paper, we discuss fixed point theorems for a new χ-set contraction condition in partially ordered Banach spaces, whose positive cone K $\mathbb{K}$ is normal, and then proceed to prove some coupled fixed point theorems in partially ordered Banach
Hemant Kumar Nashine   +3 more
doaj   +1 more source

Centrally symmetric configurations of order polytopes [PDF]

open access: yes, 2015
It is shown that the toric ideal of the centrally symmetric configuration of the order polytope of a finite partially ordered set possesses a squarefree quadratic initial ideal.
Hibi, Takayuki   +3 more
core   +1 more source

The Kraft sum as a monotone function on the refinement-ordered set of uniquely decipherable codes [PDF]

open access: yes, 2013
The set of all uniquely decipherable (UD) codes is partially ordered by re nement, meaning that all strings in the cruder code can be represented as con- catenations of strings taken from the ner code.
Foldes, Stephan
core   +2 more sources

Neutrosophic Lattices [PDF]

open access: yesNeutrosophic Sets and Systems, 2014
In this paper authors for the first time define a new notion called neutrosophic lattices. We define few properties related with them. Three types of neutrosophic lattices are defined and the special properties about these new class of lattices are ...
Vasantha Kandasamy   +1 more
doaj  

Fixed Point Theorems in Rectangular b-Metric Space Endowed with a Partial Order

open access: yesAxioms, 2023
The purpose of this paper is to present some fixed-point results for self-generalized contractions in ordered rectangular b-metric spaces. We also provide some examples that illustrate the non-triviality and richness of this area of research.
Andrei Horvat-Marc   +3 more
doaj   +1 more source

A Novel Definition of L-Fuzzy Lattice Based on Fuzzy Set

open access: yesThe Scientific World Journal, 2013
The concept of L-fuzzy lattice is presented by means of an L-fuzzy partially ordered set. An L-fuzzy partially ordered set A is an L-fuzzy lattice if and only if one of A[a], A[a], and A(a) is a lattice.
Jun-Fang Zhang
doaj   +1 more source

On chains and posets within the power set of a continuum

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1995
Transfinite induction is employed to construct a copy of an arbitrary partially-ordered set of cardinality at most c within the power set (quasi-ordered by sub-chain embeddability) of the real line.
P. T. Matthews, T. B. M. McMaster
doaj   +1 more source

Note on the Hahn-Banach Theorem in a Partially Ordered Vector Space

open access: yesJournal of Applied Mathematics, 2013
Using a fixed point theorem in a partially ordered set, we give a new proof of the Hahn-Banach theorem in the case where the range space is a partially ordered vector space.
Toshiharu Kawasaki   +2 more
doaj   +1 more source

Orthomodular Lattices Induced by the Concurrency Relation [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2009
We apply to locally finite partially ordered sets a construction which associates a complete lattice to a given poset; the elements of the lattice are the closed subsets of a closure operator, defined starting from the concurrency relation. We show that,
Luca Bernardinello   +2 more
doaj   +1 more source

Reflexive polytopes arising from partially ordered sets and perfect graphs

open access: yes, 2018
Reflexive polytopes which have the integer decomposition property are of interest. Recently, some large classes of reflexive polytopes with integer decomposition property coming from the order polytopes and the chain polytopes of finite partially ordered
Hibi, Takayuki, Tsuchiya, Akiyoshi
core   +1 more source

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