Results 21 to 30 of about 24,599 (177)

Star-path and star-stripe bipartite Ramsey numbers in multicoloring [PDF]

open access: yesTransactions on Combinatorics, 2015
‎For given bipartite graphs G 1 ‎,‎G 2 ,…‎,‎G t , the bipartite Ramsey number bR(G 1 ‎,‎G 2 ,…‎,‎G t ) is the‎ ‎smallest integer n such that if the edges of the complete bipartite graph K n,n are partitioned into t disjoint color classes giving t ...
Ghaffar Raeisi
doaj  

On interval number in cycle convexity [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2018
Recently, Araujo et al. [Manuscript in preparation, 2017] introduced the notion of Cycle Convexity of graphs. In their seminal work, they studied the graph convexity parameter called hull number for this new graph convexity they proposed, and they ...
Julio Araujo   +3 more
doaj   +1 more source

A Constructive Extension of the Characterization on Potentially Ks,t-Bigraphic Pairs

open access: yesDiscussiones Mathematicae Graph Theory, 2017
Let Ks,t be the complete bipartite graph with partite sets of size s and t. Let L1 = ([a1, b1], . . . , [am, bm]) and L2 = ([c1, d1], . . . , [cn, dn]) be two sequences of intervals consisting of nonnegative integers with a1 ≥ a2 ≥ . . . ≥ am and c1 ≥ c2
Guo Ji-Yun, Yin Jian-Hua
doaj   +1 more source

Decomposition of product graphs into complete bipartite subgraphs

open access: yesDiscrete Mathematics, 1985
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Reznick, Bruce   +2 more
openaire   +2 more sources

A heuristic method for bi-decomposition of partial Boolean functions

open access: yesInformatika, 2020
The problem of decomposition of a Boolean function is to represent a given Boolean function in the form of a superposition of some Boolean functions whose number of arguments are less than the number of given function.
Yu. V. Pottosin
doaj   +1 more source

The triangle-free graphs with rank 6 [PDF]

open access: yes, 2013
The rank of a graph G is defined to be the rank of its adjacency matrix A(G).
Fan, Yi-Zheng, Wang, Long, Wang, Yi
core   +1 more source

Solutions to problems about potentially Ks,t-bigraphic pair

open access: yesOpen Mathematics, 2022
Let S=(a1,…,am;b1,…,bn)S=\left({a}_{1},\ldots ,{a}_{m};\hspace{0.33em}{b}_{1},\ldots ,{b}_{n}), where a1,…,am{a}_{1},\ldots ,{a}_{m} and b1,…,bn{b}_{1},\ldots ,{b}_{n} are two nonincreasing sequences of nonnegative integers. The pair S=(a1,…,am;b1,…,bn)S=
Yin Jian-Hua, Zhang Liang
doaj   +1 more source

Complete subgraphs of bipartite graphs and applications to trace languages [PDF]

open access: yesRAIRO - Theoretical Informatics and Applications, 1990
Summary: Motivated by a concurrency problem, a lattice describing a certain concurrent behaviour is constructed, whose elements are complete subgraphs of a bipartite graph. As an application of this construction, one derives, extending a result of Cori and Perrin, an explicit computation for the product of trace languages.
Guaiana, G., Restivo, A., Salemi, S.
openaire   +1 more source

Random multilinear maps and the Erdős box problem

open access: yesDiscrete Analysis, 2021
Random multilinear maps and the Erdős box problem, Discrete Analysis 2021:17, 8 pp. A major theme in extremal combinatorics is determining the maximum number of edges that a graph or hypergraph can have if it does not contain a certain fixed graph or ...
David Conlon   +2 more
doaj   +1 more source

Optimal orientations of subgraphs of complete bipartite graphs

open access: yesTransactions on Combinatorics, 2015
Summary: For a graph \(G\), let \(\mathcal{D}(G)\) be the set of all strong digraphs \(D\) obtained by the orientations of \(G\). The orientation number of \(G\) is \(\vec{d}(G)=\min \{d(D)\mid D\in \mathcal{D}(G)\}\), where \(d(D)\) denotes the diameter of the digraph \(D\).
Lakshmi, R.   +2 more
openaire   +3 more sources

Home - About - Disclaimer - Privacy