Narrow your search

Library

ULiège (2)

KBR (1)

KU Leuven (1)

LUCA School of Arts (1)

Odisee (1)

Thomas More Kempen (1)

Thomas More Mechelen (1)

UCLL (1)

UNamur (1)

VIVES (1)


Resource type

book (3)

dissertation (1)


Language

English (3)

French (1)


Year
From To Submit

2022 (1)

2017 (1)

2011 (1)

1997 (1)

Listing 1 - 4 of 4
Sort by

Book
Expander families and Cayley graphs : a beginner's guide
Authors: ---
ISBN: 128342780X 9786613427809 0199877483 Year: 2011 Publisher: Oxford ; New York : Oxford University Press,

Loading...
Export citation

Choose an application

Bookmark

Abstract

The theory of expander graphs is a rapidly developing topic in mathematics and computer science, with applications to communication networks, error-correcting codes, cryptography, complexity theory, and much more. Expander Families and Cayley Graphs: A Beginner's Guide is a comprehensive introduction to expander graphs, designed to act as a bridge between classroom study and active research in the field of expanders. It equips those with little or no prior knowledge with the skills necessary to both comprehend current research articles and begin their own research. Central to this book are fou


Book
The Planar Cubic Cayley Graphs
Author:
ISBN: 9781470426446 1470426447 Year: 2017 Publisher: Providence, Rhode Island American Mathematical Society

Loading...
Export citation

Choose an application

Bookmark

Abstract

We obtain a complete description of the planar cubic Cayley graphs, providing an explicit presentation and embedding for each of them. This turns out to be a rich class, comprising several infinite families. We obtain counterexamples to conjectures of Mohar, Bonnington and Watkins. Our analysis makes the involved graphs accessible to computation, corroborating a conjecture of Droms.


Dissertation
Croissance des groupes : Solution au problème 5603
Authors: --- --- --- ---
Year: 2022 Publisher: Liège Université de Liège (ULiège)

Loading...
Export citation

Choose an application

Bookmark

Abstract

In this master's thesis, we explore the notion of growth of groups. For any finitely generated group, one can define a growth function associated to a fixed finite set of generators. It is the mapping of any positive integer n to the number of elements of a group that can be written in n generators. This allows for a classification of groups according to their growth, examples of such classes are groups of polynomial growth and groups of exponential growth. In the thesis, we define this concept with the necessary rigor. We then proceed to prove that groups of polynomial growth and virtually nilpotent groups are the same (Gromov's theorem). We also provide an example of a group, the Grigorchuk group, that has neither polynomial nor exponential growth. Dans ce mémoire, on développe la notion de croissance des groupes. Pour tout groupe finiment engendré, on définit la fonction de croissance associée à un système de générateurs finis fixé. C'est la fonction qui à un naturel n associe le nombre d'éléments du groupe qui peuvent être écrits en n générateurs. Une classification des groupes selon leur croissance est possible. On définit par exemple les groupes à croissance polynomiale ou à croissance exponentielle. Dans le mémoire, on définit ce concept avec la rigueur nécessaire. Ensuite, on prouve que les groupes virtuellement nilpotents sont à croissance polynomiale et réciproquement (théorème de Gromov). On donnera également de groupe, le groupe de Grigorchuk, qui n'est ni à croissance polynomiale ni à croissance exponentielle.

Graph symmetry : algebraic methods and applications : [Proceedings of the NATO Advanced Study Institute and séminaire de mathématiques supérieures on Graph Symmetry : algebraic methods and applications, Montréal, Canada, July 1-12, 1996]
Authors: --- --- ---
ISBN: 0792346688 9048148855 9401589372 9780792346685 Year: 1997 Volume: 497 Publisher: Dordrecht : Kluwer,

Loading...
Export citation

Choose an application

Bookmark

Abstract

The last decade has seen two parallel developments, one in computer science, the other in mathematics, both dealing with the same kind of combinatorial structures: networks with strong symmetry properties or, in graph-theoretical language, vertex-transitive graphs, in particular their prototypical examples, Cayley graphs. In the design of large interconnection networks it was realised that many of the most fre­ quently used models for such networks are Cayley graphs of various well-known groups. This has spawned a considerable amount of activity in the study of the combinatorial properties of such graphs. A number of symposia and congresses (such as the bi-annual IWIN, starting in 1991) bear witness to the interest of the computer science community in this subject. On the mathematical side, and independently of any interest in applications, progress in group theory has made it possible to make a realistic attempt at a complete description of vertex-transitive graphs. The classification of the finite simple groups has played an important role in this respect.

Listing 1 - 4 of 4
Sort by