Results 21 to 30 of about 973,826 (351)

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

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

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

Graph products of groups [PDF]

open access: yes, 1990
In the 1970's Baudisch introduced the idea of the semifree group, that is, a group in which the only relators are commutators of generators. Baudisch was mainly concerned with subgroup problems, employing length arguments on the elements of these groups.
Green, E.R, Green, Elisabeth Ruth
core   +7 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

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

Graph perfect [PDF]

open access: yes, 1994
Suatu graph G, diambil jumlah titik dari clique maksimal sebagai dasar dalam pewarnaan titik-titik pada graph tersebut. Banyaknya warna paling sedikit yang digunakan untuk 3Dewarnaan tersebut dibandingkan dengan jumlah titik dari clique maksimal.
Mulyani , Sri
core   +1 more source

Finding a Strong Stable Set or a Meyniel Obstruction in any Graph [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
A strong stable set in a graph $G$ is a stable set that contains a vertex of every maximal clique of $G$. A Meyniel obstruction is an odd circuit with at least five vertices and at most one chord.
Kathie Cameron, Jack Edmonds
doaj   +1 more source

Rainbow Perfect and Near-Perfect Matchings in Complete Graphs with Edges Colored by Circular Distance

open access: yesTheory and Applications of Graphs, 2022
Given an edge-colored complete graph Kn on n vertices, a perfect (respectively, near-perfect) matching M in Kn with an even (respectively, odd) number of vertices is rainbow if all edges have distinct colors.
Shuhei Saitoh, Naoki Matsumoto, Wei Wu
doaj   +1 more source

Perfect and Imperfect Duty: Unpacking Kant's Complex Distinction [PDF]

open access: yes, 2023
I attempt first to disentangle three aspects of Kant’s distinction between perfect and imperfect duty. There is the central distinction between principles of duty contrary to that which is contradictory in conception/consistent in conception but ...
Hope, Simon James
core   +1 more source

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