Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Broere Izak"'
Publikováno v:
Discussiones Mathematicae Graph Theory, Vol 40, Iss 4, Pp 1067-1084 (2020)
We motivate, introduce, and study radicals on classes of graphs. This concept, and the theory which is developed, imitates the original notion of a Hoehnke radical in universal algebra using congruences. It is shown how this approach ties in with the
Externí odkaz:
https://doaj.org/article/9907588e3bd743cba36b02ea7a1a59f4
Publikováno v:
Discussiones Mathematicae Graph Theory, Vol 36, Iss 2, Pp 479-500 (2016)
A graph property is a set of (countable) graphs. A homomorphism from a graph G to a graph H is an edge-preserving map from the vertex set of G into the vertex set of H; if such a map exists, we write G → H. Given any graph H, the hom-property →H
Externí odkaz:
https://doaj.org/article/7474df6e42a245c3bbf989d7ed4425f1
Autor:
Borowiecki Mieczysław, Broere Izak
Publikováno v:
Discussiones Mathematicae Graph Theory, Vol 36, Iss 2, Pp 243-257 (2016)
The total generalised colourings considered in this paper are colourings of graphs such that the vertices and edges of the graph which receive the same colour induce subgraphs from two prescribed hereditary graph properties while incident elements re
Externí odkaz:
https://doaj.org/article/c023e5686c724237a3653866075b01cc
Publikováno v:
Discussiones Mathematicae Graph Theory, Vol 33, Iss 3, Pp 477-492 (2013)
Rado constructed a (simple) denumerable graph R with the positive integers as vertex set with the following edges: For given m and n with m < n, m is adjacent to n if n has a 1 in the m’th position of its binary expansion. It is well known that R i
Externí odkaz:
https://doaj.org/article/ebf3bffa3d424f1782a5bd9f5a3a286f
Autor:
Broere Izak, Heidema Johannes
Publikováno v:
Discussiones Mathematicae Graph Theory, Vol 33, Iss 1, Pp 33-47 (2013)
The well-known Rado graph R is universal in the set of all countable graphs I, since every countable graph is an induced subgraph of R. We study universality in I and, using R, show the existence of 2 א0 pairwise non-isomorphic graphs which are univ
Externí odkaz:
https://doaj.org/article/0ae60690bb56457ba89ccddf7d93e424
Autor:
Broere Izak, Mihók Peter
Publikováno v:
Discussiones Mathematicae Graph Theory, Vol 33, Iss 1, Pp 7-7 (2013)
Externí odkaz:
https://doaj.org/article/59cff9169f2844158a1a9c3bbbd25b9d
Autor:
Broere, Izak, Heidema, Johannes
We introduce and study, for a process P delivering edges on the Cartesian product of the vertex sets of a given set of graphs, the P-product of these graphs, thereby generalizing many types of product graph. Analogous to the notion of a multilinear m
Externí odkaz:
http://arxiv.org/abs/1612.00601
Publikováno v:
In Discrete Applied Mathematics 15 August 2019 266:56-64
Autor:
Broere, Izak, Heidema, Johannes
Publikováno v:
In AKCE International Journal of Graphs and Combinatorics February 2019
Autor:
Broere, Izak, Dorfling, Michael J.
Publikováno v:
In Discrete Mathematics 6 October 2013 313(19):1961-1964