Results 31 to 40 of about 2,876,957 (249)

On bipartite powers of bigraphs [PDF]

open access: yes, 2012
The notion of graph powers is a well-studied topic in graph theory and its applications. In this paper、 we investigate abipartite analogue of graph powers、 which we call bipartite powers of bigraphs.
Yota Otachi   +5 more
core   +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

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

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   +5 more sources

Graceful labeling of triangular extension of complete bipartite graph [PDF]

open access: yes, 2019
For positive integers m, n, K m,n represents the complete bipartite graph. We name the graph G = K m,n ⊙ K2 as triangular extension of complete bipartite graph K m,n , since there is a triangle hanging from every vertex of K m,n .
Bhoumik, Soumya   +3 more
core   +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

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   +4 more sources

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

Engineering Ferrimagnetic Interactions in Molecular Quantum Systems

open access: yesAngewandte Chemie, EarlyView.
Heterospin nanographene architectures—constructed by covalently linking spin‐1/2$\nicefrac {1}{2}$ and spin‐1 triangular units via on‐surface synthesis—are characterized by bond‐resolved scanning probe microscopy. Inelastic electron tunneling spectroscopy probes exchange interactions within a Heisenberg model, revealing both compensated (S=0$S=0$) and ...
Elia Turco   +8 more
wiley   +2 more sources

Home - About - Disclaimer - Privacy