Symmetry in Graphs

Symmetry in Graphs
Author: Ted Dobson
Publisher: Cambridge University Press
Total Pages: 527
Release: 2022-05-12
Genre: Language Arts & Disciplines
ISBN: 1108429068

The first full-length book on the theme of symmetry in graphs, a fast-growing topic in algebraic graph theory.

Symmetry in Graph Theory

Symmetry in Graph Theory
Author: Jose M. Rodriguez
Publisher: MDPI
Total Pages: 340
Release: 2019-03-14
Genre: Mathematics
ISBN: 303897658X

This book contains the successful invited submissions to a Special Issue of Symmetry on the subject of “Graph Theory”. Although symmetry has always played an important role in Graph Theory, in recent years, this role has increased significantly in several branches of this field, including but not limited to Gromov hyperbolic graphs, the metric dimension of graphs, domination theory, and topological indices. This Special Issue includes contributions addressing new results on these topics, both from a theoretical and an applied point of view.

Graph Symmetry

Graph Symmetry
Author: Gena Hahn
Publisher: Springer Science & Business Media
Total Pages: 456
Release: 1997-06-30
Genre: Mathematics
ISBN: 9780792346685

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.

Isomorphisms, Symmetry and Computations in Algebraic Graph Theory

Isomorphisms, Symmetry and Computations in Algebraic Graph Theory
Author: Gareth A. Jones
Publisher: Springer Nature
Total Pages: 239
Release: 2020-01-10
Genre: Mathematics
ISBN: 3030328082

This book consists of a selection of peer-reviewed contributions to the Workshop on Algebraic Graph Theory that took place in Pilsen, Czech Republic in October 2016. Primarily intended for early career researchers, it presents eight self-contained articles on a selection of topics within algebraic combinatorics, ranging from association schemes to symmetries of graphs and isomorphism testing. Algebraic combinatorics is a compelling mathematical discipline based on the powerful interplay of algebraic and combinatorial methods. Algebraic interpretation of combinatorial structures (such as symmetry or regularity) has often led to enlightening discoveries and powerful results, while discrete and combinatorial structures have given rise to new algebraic structures that have found valuable applications. In addition to these original research contributions, the reader will find a survey linking numerous threads in algebraic combinatorics, and an extensive tutorial showcasing the universality of algebraic methods in the study of combinatorial structures.

Distance-Regular Graphs

Distance-Regular Graphs
Author: Andries E. Brouwer
Publisher: Springer Science & Business Media
Total Pages: 513
Release: 2012-12-06
Genre: Mathematics
ISBN: 3642743412

Ever since the discovery of the five platonic solids in ancient times, the study of symmetry and regularity has been one of the most fascinating aspects of mathematics. Quite often the arithmetical regularity properties of an object imply its uniqueness and the existence of many symmetries. This interplay between regularity and symmetry properties of graphs is the theme of this book. Starting from very elementary regularity properties, the concept of a distance-regular graph arises naturally as a common setting for regular graphs which are extremal in one sense or another. Several other important regular combinatorial structures are then shown to be equivalent to special families of distance-regular graphs. Other subjects of more general interest, such as regularity and extremal properties in graphs, association schemes, representations of graphs in euclidean space, groups and geometries of Lie type, groups acting on graphs, and codes are covered independently. Many new results and proofs and more than 750 references increase the encyclopaedic value of this book.

Incidence and Symmetry in Design and Architecture

Incidence and Symmetry in Design and Architecture
Author: Jenny A. Baglivo
Publisher: Cambridge University Press
Total Pages: 319
Release: 1983-03-31
Genre: Mathematics
ISBN: 9780521230438

The initial purposes of this 1983 text were to develop mathematical topics relevant to the study of the incidence and symmetry structures of geometrical objects and to expand the reader's geometric intuition. The two fundamental mathematical topics employed in this endeavor are graph theory and the theory of transformation groups. Part I, Incidence, starts with two sections on the basics of graph theory and continues with a variety of specific applications of graph theory. Following this, the text becomes more theoretical; here graph theory is used to study surfaces other than the plane and the sphere. Part II, Symmetry, starts with a section on rigid motions or symmetries of the plane, which is followed by another on the classification of planar patterns. Additionally, an overview of symmetry in three-dimensional space is provided, along with a reconciliation of graph theory and group theory in a study of enumeration problems in geometry.

Why Beauty Is Truth

Why Beauty Is Truth
Author: Ian Stewart
Publisher:
Total Pages: 306
Release: 2008-04-29
Genre: Mathematics
ISBN: 0465082378

Physics.

Functions and Graphs

Functions and Graphs
Author: I. M. Gelfand
Publisher: Courier Corporation
Total Pages: 116
Release: 2002-01-01
Genre: Mathematics
ISBN: 0486425649

This volume presents students with problems and exercises designed to illuminate the properties of functions and graphs. The 1st part of the book employs simple functions to analyze the fundamental methods of constructing graphs. The 2nd half deals with more complicated and refined questions concerning linear functions, quadratic trinomials, linear fractional functions, power functions, and rational functions. 1969 edition.

Optimal Analysis of Structures by Concepts of Symmetry and Regularity

Optimal Analysis of Structures by Concepts of Symmetry and Regularity
Author: Ali Kaveh
Publisher: Springer Science & Business Media
Total Pages: 473
Release: 2013-05-16
Genre: Science
ISBN: 3709115655

Optimal analysis is defined as an analysis that creates and uses sparse, well-structured and well-conditioned matrices. The focus is on efficient methods for eigensolution of matrices involved in static, dynamic and stability analyses of symmetric and regular structures, or those general structures containing such components. Powerful tools are also developed for configuration processing, which is an important issue in the analysis and design of space structures and finite element models. Different mathematical concepts are combined to make the optimal analysis of structures feasible. Canonical forms from matrix algebra, product graphs from graph theory and symmetry groups from group theory are some of the concepts involved in the variety of efficient methods and algorithms presented. The algorithms elucidated in this book enable analysts to handle large-scale structural systems by lowering their computational cost, thus fulfilling the requirement for faster analysis and design of future complex systems. The value of the presented methods becomes all the more evident in cases where the analysis needs to be repeated hundreds or even thousands of times, as for the optimal design of structures by different metaheuristic algorithms. The book is of interest to anyone engaged in computer-aided analysis and design and software developers in this field. Though the methods are demonstrated mainly through skeletal structures, continuum models have also been added to show the generality of the methods. The concepts presented are not only applicable to different types of structures but can also be used for the analysis of other systems such as hydraulic and electrical networks.

Discrete Mathematics and Symmetry

Discrete Mathematics and Symmetry
Author: Angel Garrido
Publisher: MDPI
Total Pages: 458
Release: 2020-03-05
Genre: Mathematics
ISBN: 3039281909

Some of the most beautiful studies in Mathematics are related to Symmetry and Geometry. For this reason, we select here some contributions about such aspects and Discrete Geometry. As we know, Symmetry in a system means invariance of its elements under conditions of transformations. When we consider network structures, symmetry means invariance of adjacency of nodes under the permutations of node set. The graph isomorphism is an equivalence relation on the set of graphs. Therefore, it partitions the class of all graphs into equivalence classes. The underlying idea of isomorphism is that some objects have the same structure if we omit the individual character of their components. A set of graphs isomorphic to each other is denominated as an isomorphism class of graphs. The automorphism of a graph will be an isomorphism from G onto itself. The family of all automorphisms of a graph G is a permutation group.