Results 31 to 40 of about 622 (259)

On the kth Eigenvalues of Trees with Perfect Matchings [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2007
Graphs and ...
An Chang, Wai Chee Shiu
doaj   +3 more sources

Annihilating random walks and perfect matchings of planar graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2003
We study annihilating random walks on $\mathbb{Z}$ using techniques of P.W. Kasteleyn and $R$. Kenyonon perfect matchings of planar graphs. We obtain the asymptotic of the density of remaining particles and the partition function of the underlying ...
Massimiliano Mattera
doaj   +1 more source

A note on extreme sets

open access: yesElectronic Journal of Graph Theory and Applications, 2017
In decomposition theory, extreme sets have been studied extensively due to its connection to perfect matchings in a graph. In this paper, we first define extreme sets with respect to degree-matchings and next investigate some of their properties.
Radosław Cymer
doaj   +1 more source

Generalized Matching Preclusion in Bipartite Graphs

open access: yesTheory and Applications of Graphs, 2018
The matching preclusion number of a graph with an even number of vertices is the minimum number of edges whose deletion results in a graph that has no perfect matchings. For many interconnection networks, the optimal such sets are precisely sets of edges
Zachary Wheeler   +4 more
doaj   +1 more source

Near―perfect non-crossing harmonic matchings in randomly labeled points on a circle [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
Consider a set $S$ of points in the plane in convex position, where each point has an integer label from $\{0,1,\ldots,n-1\}$. This naturally induces a labeling of the edges: each edge $(i,j)$ is assigned label $i+j$, modulo $n$.
József Balogh   +2 more
doaj   +1 more source

Almost all Steiner triple systems are almost resolvable

open access: yesForum of Mathematics, Sigma, 2020
We show that for any n divisible by 3, almost all order-n Steiner triple systems admit a decomposition of almost all their triples into disjoint perfect matchings (that is, almost all Steiner triple systems are almost resolvable).
Asaf Ferber, Matthew Kwan
doaj   +1 more source

Matchings in hexagonal cacti

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1987
Explicit recurrences are derived for the matching polynomials of the basic types of hexagonal cacti, the linear cactus and the star cactus and also for an associated graph, called the hexagonal crown.
E. J. Farrell
doaj   +1 more source

Classical Dimers on Penrose Tilings

open access: yesPhysical Review X, 2020
We study the classical dimer model on rhombic Penrose tilings, whose edges and vertices may be identified as those of a bipartite graph. We find that Penrose tilings do not admit perfect matchings (defect-free dimer coverings).
Felix Flicker   +2 more
doaj   +1 more source

Cycles and perfect matchings

open access: yesDiscrete Mathematics, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
James Haglund, Jeffrey B. Remmel
openaire   +2 more sources

Bichromatic Perfect Matchings with Crossings

open access: yes, 2023
Appears in the Proceedings of the 31st International Symposium on Graph Drawing and Network Visualization (GD 2023)
Oswin Aichholzer   +4 more
openaire   +2 more sources

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