Results 31 to 40 of about 64,086 (307)

Commuting decomposition of Kn1,n2,...,nk through realization of the product A(G)A(GPk )

open access: yesSpecial Matrices, 2018
In this paper, we introduce the notion of perfect matching property for a k-partition of vertex set of given graph. We consider nontrivial graphs G and GPk , the k-complement of graph G with respect to a kpartition of V(G), to prove that A(G)A(GPk ) is ...
Bhat K. Arathi, Sudhakara G.
doaj   +1 more source

Random perfect graphs

open access: yesRandom Structures & Algorithms, 2018
We investigate the asymptotic structure of a random perfect graph Pn sampled uniformly from the set of perfect graphs on vertex set . Our approach is based on the result of Prömel and Steger that almost all perfect graphs are generalised split graphs, together with a method to generate such graphs almost uniformly.
McDiarmid, C, Yolov, N
openaire   +2 more sources

Fractional matching preclusion for butterfly derived networks

open access: yesTheory and Applications of Graphs, 2019
The matching preclusion number of a graph is the minimum number of edges whose deletion results in a graph that has neither perfect matchings nor almost perfect matchings.
Xia Wang   +4 more
doaj   +1 more source

Perfectness of clustered graphs [PDF]

open access: yesDiscrete Optimization, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Flavia Bonomo   +3 more
openaire   +3 more sources

On kernels in strongly game-perfect digraphs and a characterisation of weakly game-perfect digraphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
We prove that the game-perfect digraphs defined by Andres (2012) with regard to a digraph version of the maker-breaker graph colouring game introduced by Bodlaender (1991) always have a kernel.
Stephan Dominique Andres
doaj   +1 more source

On the number of perfect matchings in random polygonal chains

open access: yesOpen Mathematics, 2023
Let GG be a graph. A perfect matching of GG is a regular spanning subgraph of degree one. Enumeration of perfect matchings of a (molecule) graph is interest in chemistry, physics, and mathematics.
Wei Shouliu   +3 more
doaj   +1 more source

Bounds on perfect k-domination in trees: an algorithmic approach [PDF]

open access: yesOpuscula Mathematica, 2012
Let \(k\) be a positive integer and \(G = (V;E)\) be a graph. A vertex subset \(D\) of a graph \(G\) is called a perfect \(k\)-dominating set of \(G\) if every vertex \(v\) of \(G\) not in \(D\) is adjacent to exactly \(k\) vertices of \(D\). The minimum
B. Chaluvaraju, K. A. Vidya
doaj   +1 more source

Formation of Non-Perfect Maze Using Prim’s Algorithm

open access: yesJTAM (Jurnal Teori dan Aplikasi Matematika), 2023
Maze is a place that has many paths with tortuous paths that are misleading and full of dead ends and can be viewed as a grid graph. A non-perfect maze is a maze that has a cycle.
Mahyus Ihsan   +4 more
doaj   +1 more source

Eigenvalues of the perfect matching derangement graph

open access: yes, 2023
The perfect matching derangement graph M2n is the graph whose vertex set consists of the perfect matchings of the complete graph K2n such that two vertices (perfect matchings) are adjacent if and only if they have no edges in common, i.e.
Koh, Samuel Zhi Kang
core   +1 more source

Formalizing Randomized Matching Algorithms [PDF]

open access: yesLogical Methods in Computer Science, 2012
Using Je\v{r}\'abek 's framework for probabilistic reasoning, we formalize the correctness of two fundamental RNC^2 algorithms for bipartite perfect matching within the theory VPV for polytime reasoning.
Dai Tri Man Le, Stephen A. Cook
doaj   +1 more source

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