Results 41 to 50 of about 85,296 (298)

Decomposition of Certain Complete Bipartite Graphs into Prisms

open access: yesDiscussiones Mathematicae Graph Theory, 2017
Häggkvist [6] proved that every 3-regular bipartite graph of order 2n with no component isomorphic to the Heawood graph decomposes the complete bipartite graph K6n,6n.
Froncek Dalibor
doaj   +1 more source

On vertex stability of complete k-partite graphs [PDF]

open access: yesOpuscula Mathematica, 2015
Let \(H\) be any graph. We say that graph \(G\) is \(H\)-stable if \(G-u\) contains a subgraph isomorphic to \(H\) for an arbitrary chosen \(u\in V(G)\).
Mateusz Nikodem
doaj   +1 more source

Multicolor Ramsey Numbers For Complete Bipartite Versus Complete Graphs [PDF]

open access: yesJournal of Graph Theory, 2013
AbstractLet be graphs. The multicolor Ramsey number is the minimum integer r such that in every edge‐coloring of by k colors, there is a monochromatic copy of in color i for some . In this paper, we investigate the multicolor Ramsey number , determining the asymptotic behavior up to a polylogarithmic factor for almost all ranges of t and m. Several
Lenz, John, Mubayi, Dhruv
openaire   +2 more sources

Decompositions of Circulant-Balanced Complete Multipartite Graphs Based on a Novel Labelling Approach

open access: yesJournal of Function Spaces, 2022
For applied scientists and engineers, graph theory is a strong and vital tool for evaluating and inventing solutions for a variety of issues. Graph theory is extremely important in complex systems, particularly in computer science.
A. El-Mesady, Omar Bazighifan
doaj   +1 more source

Decomposition of Certain Complete Graphs and Complete Multipartite Graphs into Almost-bipartite Graphs and Bipartite Graphs

open access: yesTheory and Applications of Graphs, 2020
In his classical paper [14], Rosa introduced a hierarchical series of labelings called ρ, σ, β and α labeling as a tool to settle Ringel’s Conjecture which states that if T is any tree with m edges then the complete graph K2m+1 can be decomposed into 2m + 1 copies of T .
Sethuraman, G., Sujasree, M.
openaire   +4 more sources

-labeling of supersubdivided connected graph plus an edge

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Rosa, in his classical paper (Rosa, 1967) introduced a hierarchical series of labelings called and labeling as a tool to settle Ringel’s Conjecture which states that if is any tree with edges then the complete graph can be decomposed into copies of ...
G. Sethuraman, M. Sujasree
doaj   +1 more source

Terminal-pairability in complete bipartite graphs

open access: yesDiscrete Applied Mathematics, 2018
8 pages, several typos ...
Lucas Colucci   +3 more
openaire   +3 more sources

A note on pm-compact bipartite graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2014
A graph is called perfect matching compact (briefly, PM-compact), if its perfect matching graph is complete. Matching-covered PM-compact bipartite graphs have been characterized. In this paper, we show that any PM-compact bipartite graph G with δ (G) ≥ 2
Liu Jinfeng, Wang Xiumei
doaj   +1 more source

Decomposition of complete bipartite graphs into cycles and stars with four edges

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Let Ck, Sk denote a cycle, star with k edges and let Km,n denotes a complete bipartite graph with m and n vertices in the parts. In this paper, we obtain necessary and sufficient conditions for the existence of a decomposition of complete bipartite ...
M. Ilayaraja, A. Muthusamy
doaj   +1 more source

Completing partial packings of bipartite graphs

open access: yesJournal of Combinatorial Theory, Series A, 2011
Given a bipartite graph $H$ and an integer $n$, let $f(n;H)$ be the smallest integer such that, any set of edge disjoint copies of $H$ on $n$ vertices, can be extended to an $H$-design on at most $n+f(n;H)$ vertices. We establish tight bounds for the growth of $f(n;H)$ as $n \rightarrow \infty$.
Füredi, Zoltán   +2 more
openaire   +2 more sources

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