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The IC-Indices of Complete Bipartite Graphs [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2008
Let $G$ be a connected graph, and let $f$ be a function mapping $V(G)$ into ${\Bbb N}$. We define $f(H)=\sum_{v\in{V(H)}}f(v)$ for each subgraph $H$ of $G$. The function $f$ is called an IC-coloring of $G$ if for each integer $k$ in the set $\{1,2,\cdots,f(G)\}$ there exists an (induced) connected subgraph $H$ of $G$ such that $f(H)=k$, and the IC ...
Chin-Lin Shiue, Hung-Lin Fu
openaire   +3 more sources

Edge condition for hamiltonicity in balanced tripartite graphs [PDF]

open access: yesOpuscula Mathematica, 2009
A well-known theorem of Entringer and Schmeichel asserts that a balanced bipartite graph of order \(2n\) obtained from the complete balanced bipartite \(K_{n,n}\) by removing at most \(n-2\) edges, is bipancyclic.
Janusz Adamus
doaj   +1 more source

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

Degree-constrained edge partitioning in graphs arising from discrete tomography

open access: yesJournal of Graph Algorithms and Applications, 2009
Starting from the basic problem of reconstructing a 2-dimensional image given by its projections on two axes, one associates a model of edge coloring in a complete bipartite graph. The complexity of the case with k=3 colors is open.
Cedric Bentz   +4 more
doaj   +1 more source

Algorithmic Aspects of Secure Connected Domination in Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2021
Let G = (V, E) be a simple, undirected and connected graph. A connected dominating set S ⊆ V is a secure connected dominating set of G, if for each u ∈ V \ S, there exists v ∈ S such that (u, v) ∈ E and the set (S \ {v}) ∪ {u} is a connected dominating ...
Kumar Jakkepalli Pavan   +1 more
doaj   +1 more source

Topological Drawings of Complete Bipartite Graphs [PDF]

open access: yes, 2016
Topological drawings are natural representations of graphs in the plane, where vertices are represented by points, and edges by curves connecting the points. Topological drawings of complete graphs and of complete bipartite graphs have been studied extensively in the context of crossing number problems. We consider a natural class of simple topological
Cardinal, Jean, Felsner, Stefan
openaire   +3 more sources

Spanning trees in complete bipartite graphs and resistance distance in nearly complete bipartite graphs [PDF]

open access: yesDiscrete Applied Mathematics, 2020
Using the theory of electrical network, we first obtain a simple formula for the number of spanning trees of a complete bipartite graph containing a certain matching or a certain tree. Then we apply the effective resistance (i.e., resistance distance in graphs) to find a formula for the number of spanning trees in the nearly complete bipartite graph $G(
Jun Ge, Fengming Dong
openaire   +3 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

Matching graphs of Hypercubes and Complete Bipartite Graphs [PDF]

open access: yesElectronic Notes in Discrete Mathematics, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Complete bipartite factorisations by complete bipartite graphs

open access: yesDiscrete Mathematics, 1997
Let \(K_{m,n}\) be the complete bipartite graph on sets of size \(m\) and \(n\). A \(K_{p,q}\)-factor of \(K_{m,n}\) is a spanning subgraph of \(K_{m,n}\) which is a union of vertex-disjoint subgraphs each isomorphic to \(K_{p,q}\). If \(K_{m,n}\) is expressed as a edge-disjoint union of \(K_{p,q}\)-factors, then this union is called a \(K_{p,q ...
openaire   +1 more source

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