Results 11 to 20 of about 1,226,392 (267)

L(1, 2)-labeling numbers on square of cycles

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
For two positive numbers d and m, an m-L(1, d)-labeling of a graph G is a mapping such that if and if The span of f is the maximum difference among the numbers assigned by f.
Le Liu, Qiong Wu
doaj   +1 more source

Internal Direct Products and the Universal Property of Direct Product Groups

open access: yesFormalized Mathematics, 2023
Abstract This is a “quality of life” article concerning product groups, using the Mizar system [2], [4]. Like a Sonata, this article consists of three movements. The first act, the slowest of the three, builds the infrastructure necessary for the rest of the article.
openaire   +2 more sources

Triangular Norm-Based Elements on Bounded Lattices

open access: yesAxioms, 2023
In this study, we introduce the notion of the T-irreducible element as a generalization of the notion of the meet-irreducible element in complete lattices. We derive some related properties of these elements and T-prime elements.
Şerife Yılmaz, Rabia İşçi
doaj   +1 more source

On Independent Domination in Direct Products

open access: yesGraphs and Combinatorics, 2022
In \cite{nr-1996} Nowakowski and Rall listed a series of conjectures involving several different graph products. In particular, they conjectured that $i(G\times H) \ge i(G)i(H)$ where $i(G)$ is the independent domination number of $G$ and $G\times H$ is the direct product of graphs $G$ and $H$.
Kirsti Kuenzel, Douglas F. Rall
openaire   +3 more sources

Solving the dynamic coloring problem for direct products of paths with fan graphs

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2023
This paper deals with the r-dynamic chromatic problem of the direct product of a path with a fan graph Fm,n.
Falcón Raúl M.   +2 more
doaj   +1 more source

Super Connected Direct Product of Graphs and Cycles

open access: yesAxioms, 2022
The topology of an interconnection network can be modeled by a graph G=(V(G),E(G)). The connectivity of graph G is a parameter used to measure the reliability of a corresponding network. The direct product is an important graph product. This paper mainly
Jiaqiong Yin, Yingzhi Tian
doaj   +1 more source

Complex Hesitant Fuzzy Graph

open access: yesFuzzy Information and Engineering, 2023
Government policymakers face a problem about illustrating and evaluating strategies and plan to design active communities which need to be assessed for studying the collaboration between ministries.
Eman A. AbuHijleh
doaj   +1 more source

New Concepts of Picture Fuzzy Graphs with Application

open access: yesMathematics, 2019
The picture fuzzy set is an efficient mathematical model to deal with uncertain real life problems, in which a intuitionistic fuzzy set may fail to reveal satisfactory results.
Cen Zuo, Anita Pal, Arindam Dey
doaj   +1 more source

A note on periods of powers*

open access: yesESAIM: Proceedings and Surveys, 2014
Let f:X → X be a continuous map defined from a topological space X into itself. We discuss the problem of analyzing and computing explicitly the set Per(fp) of periods of the p-th iterate ...
Cánovas J.S., Linero Bas A.
doaj   +1 more source

On well-covered direct products

open access: yesDiscussiones Mathematicae Graph Theory, 2020
A graph $G$ is well-covered if all maximal independent sets of $G$ have the same cardinality. In 1992 Topp and Volkmann investigated the structure of well-covered graphs that have nontrivial factorizations with respect to some of the standard graph products.
Kirsti Kuenzel, Douglas F. Rall
openaire   +3 more sources

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