Results 31 to 40 of about 709,702 (295)

Graphs whose vertex set can be partitioned into a total dominating set and an independent dominating set [PDF]

open access: yesOpuscula Mathematica
A graph \(G\) whose vertex set can be partitioned into a total dominating set and an independent dominating set is called a TI-graph. We give constructions that yield infinite families of graphs that are TI-graphs, as well as constructions that yield ...
Teresa W. Haynes, Michael A. Henning
doaj   +1 more source

On the Factorization of Graphs with Exactly One Vertex of Infinite Degree [PDF]

open access: yes, 1983
We give a necessary and sufficient condition for the existence of a 1-factor in graphs with exactly one vertex of infinite ...
Bry, François
core   +1 more source

Cutsets in Infinite Graphs [PDF]

open access: yesCombinatorics, Probability and Computing, 2006
We answer three questions posed in a paper by Babson and Benjamini. They introduced a parameter $C_G$ for Cayley graphs $G$ that has significant application to percolation. For a minimal cutset of $G$ and a partition of this cutset into two classes, take the minimal distance between the two classes.
openaire   +2 more sources

Seidel Integral Complete Split Graphs [PDF]

open access: yesMathematics Interdisciplinary Research, 2019
In the paper we consider a generalized join operation, that is, the H-join on graphs where H is an arbitrary graph. In terms of Seidel matrix of graphs we determine the Seidel spectrum of the graphs obtained by this operation on regular graphs.
Pavel Hic   +2 more
doaj   +1 more source

Spectral Theory of Infinite Quantum Graphs [PDF]

open access: yes, 2018
We investigate quantum graphs with infinitely many vertices and edges without the common restriction on the geometry of the underlying metric graph that there is a positive lower bound on the lengths of its edges. Our central result is a close connection
Kostenko, Aleksey   +4 more
core   +1 more source

Infinite families of asymmetric graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
A graph G is asymmetric if its automorphism group of vertices is trivial. Asymmetric graphs were introduced by Erdős and Rényi in 1963. They showed that the probability of a graph on n vertices being asymmetric tends to 1 as n tends to infinity.
Alejandra Brewer   +5 more
doaj   +1 more source

Duality of infinite graphs [PDF]

open access: yes, 1982
Some basic results on duality of infinite graphs are established and it is proven that a block has a dual graph if and only if it is planar and any two vertices are separated by a finite edge cut.
Thomassen, Carsten
core   +1 more source

Characterising memory in infinite games [PDF]

open access: yesLogical Methods in Computer Science
This paper is concerned with games of infinite duration played over potentially infinite graphs. Recently, Ohlmann (LICS 2022) presented a characterisation of objectives admitting optimal positional strategies, by means of universal graphs: an objective ...
Antonio Casares, Pierre Ohlmann
doaj   +1 more source

On external presentations of infinite graphs [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2009
The vertices of a finite state system are usually a subset of the natural numbers. Most algorithms relative to these systems only use this fact to select vertices.
Christophe Morvan
doaj   +1 more source

On Transmission Irregular Cubic Graphs of an Arbitrary Order

open access: yesMathematics, 2022
The transmission of a vertex v of a graph G is the sum of distances from v to all the other vertices of G. A transmission irregular graph (TI graph) has mutually distinct vertex transmissions.
Anatoly Yu. Bezhaev, Andrey A. Dobrynin
doaj   +1 more source

Home - About - Disclaimer - Privacy