Ross Street / Macquarie University, Sydney

Quantum Groups
A Path to Current Algebra

Series: Australian Mathematical Society Lecture Series (No. 19)
Paperback (ISBN-13: 9780521695244 | ISBN-10: 0521695244)

Algebra has moved well beyond the topics discussed in standard undergraduate texts on 'modern algebra'. Those books typically dealt with algebraic structures such as groups, rings and fields: still very important concepts! However Quantum Groups: A Path to Current Algebra is written for the reader at ease with at least one such structure and keen to learn the latest algebraic concepts and techniques. A key to understanding these new developments is categorical duality. A quantum group is a vector space with structure. Part of the structure is standard: a multiplication making it an 'algebra'. Another part is not in those standard books at all: a comultiplication, which is dual to multiplication in the precise sense of category theory, making it a 'coalgebra'. While coalgebras, bialgebras and Hopf algebras have been around for half a century, the term 'quantum group', along with revolutionary new examples, was launched by Drinfel'd in 1986.

* Essential for any graduate student or researcher whose research involves quantum groups
* Containing the latest algebraic concepts and techniques, this book updates the meaning of 'modern algebra'
* Includes over 60 worked examples and exercises

Contents

Introduction; 1. Revision of basic structures; 2. Duality between geometry and algebra; 3. The quantum general linear group; 4. Modules and tensor products; 5. Cauchy modules; 6. Algebras; 7. Coalgebras and bialgebras; 8. Dual coalgebras of algebras; 9. Hopf algebras; 10. Representations of quantum groups; 11. Tensor categories; 12. Internal homs and duals; 13. Tensor functors and Yang-Baxter operators; 14. A tortile Yang-Baxter operator for each finite-dimensional vector space; 15. Monoids in tensor categories; 16. Tannaka duality; 17. Adjoining an antipode to a bialgebra; 18. The quantum general linear group again; 19. Solutions to exercises; References; Index.

Edited by Nicholas Young / University of Newcastle

Surveys in Geometry and Number Theory

Series: London Mathematical Society Lecture Note Series (No. 338)
Paperback (ISBN-13: 9780521691826 | ISBN-10: 0521691826)

The focus of this book is the continuing strength of pure mathematics in Russia after the post-Soviet diaspora. The authors are eight young specialists who have chosen to remain in their country and who are associated with strong research groups in Moscow and St. Petersburg in the fields of algebraic geometry and number theory. Their articles are based on lecture courses given at British universities. The articles are mainly surveys of the recent work of the research groups and contain a substantial number of original results. Topics covered are homogeneous spaces (embeddings, dual varieties), formal groups, mirror duality, del Pezzo fibrations, Diophantine approximation and geometric quantization. The authors are I. Arzhantsev, M. Bondarko, V. Golyshev, M. Grinenko, N. Moshchevitin, E. Tevelev, D. Timashev and N. Tyurin. Mathematical researchers and graduate students in algebraic geometry and number theory worldwide will find this book of great interest.

* Showcases the continuing vitality of mathematics in Russia
* Presents the research of major groups working in algebraic geometry and number theory in Russia
* Contains a substantial number of original results

Contents

Preface; 1. Affine embeddings of homogeneous spaces I. V. Arzhantsev; 2. Formal groups over local fields: a constructive approach M. V. Bondarko; 3. Classification problems and mirror duality V. V. Golyshev; 4. Birational models of del Pezzo fibrations M. M. Grinenko; 5. Best Diophantine approximations N. G. Moshchevitin; 6. Projectively dual varieties of homogeneous spaces E. A. Tevelev; 7. Equivariant embeddings of homogeneous spaces D. A. Timashev; 8. Geometric quantization and algebraic Lagrangian geometry N. A. Tyurin.

Contributors

I. V. Arzhantsev, M. V. Bondarko, V. V. Golyshev, M. M. Grinenko, N. G. Moshchevitin, E. A. Tevelev, D. A. Timashev, N. A. Tyurin

Matthew Hennessy / University of Sussex

A Distributed Pi-Calculus

Hardback (ISBN-13: 9780521873307 | ISBN-10: 0521873304)

Distributed systems are fast becoming the norm in computer science. Formal mathematical models and theories of distributed behaviour are needed in order to understand them. This book proposes a distributed pi-calculus called Dpi, for describing the behaviour of mobile agents in a distributed world. It is based on an existing formal language, the pi-calculus, to which it adds a network layer and a primitive migration construct. A mathematical theory of the behaviour of these distributed systems is developed, in which the presence of types plays a major role. It is also shown how in principle this theory can be used to develop verification techniques for guaranteeing the behavior of distributed agents. The text is accessible to computer scientists with a minimal background in discrete mathematics. It contains an elementary account of the pi-calculus, and the associated theory of bisimulations. It also develops the type theory required by Dpi from first principles.

* First book on formal foundations of distributed computation
* Accessible introduction to the theory of the pi-calculus, with many exercises
* Contains many worked examples and over 70 exercises

Contents

1. Introduction; 2. Inductive principles; 3. The asynchronous Pi-Calculus; 4. Types for API; 5. Types and behaviour in API; 6. A distributed asynchronous Pi-Calculus; Behavioural Equivalences for ADPI; Sources; List of figures; Notation.

Linda Keen / City University of New York
Nikola Lakic / City University of New York

Hyperbolic Geometry from a Local Viewpoint

Series: London Mathematical Society Student Texts (No. 68)
Paperback (ISBN-13: 9780521682244 | ISBN-10: 052168224X)
Hardback (ISBN-13: 9780521863605 | ISBN-10: 0521863600)

Written for graduate students, this book presents topics in 2-dimensional hyperbolic geometry. The authors begin with rigid motions in the plane which are used as motivation for a full development of hyperbolic geometry in the unit disk. The approach is to define metrics from an infinitesimal point of view; first the density is defined and then the metric via integration. The study of hyperbolic geometry in arbitrary domains requires the concepts of surfaces and covering spaces as well as uniformization and Fuchsian groups. These ideas are developed in the context of what is used later. The authors then provide a detailed discussion of hyperbolic geometry for arbitrary plane domains. New material on hyperbolic and hyperbolic-like metrics is presented. These are generalizations of the Kobayashi and Caratheodory metrics for plane domains. The book concludes with applications to holomorphic dynamics including new results and accessible open problems.

* Entirely self-contained text on hyperbolic geometry for plane domains, accessible to upper-level undergraduate and graduate *tudents yet also suitable for academic researchers
* Contains over 250 exercises and worked examples
* Presents brand new material on hyperbolic and hyperbolic-like matrices

Contents

Introduction; 1. Elementary transformations; 2 Hyperbolic metric in the unit disk; 3. Holomorphic functions; 4. Topology and uniformization; 5. Discontinuous groups; 6 Fuchsian groups; 7. General hyperbolic metric; 8. The Kobayashi metric; 9. The Caratheodory pseudo metric; 10. Contraction properties; 11. Applications; 12 Applications II; 13. Applications III; 14. Estimating hyperbolic densities; 15. Uniformly perfect domains; 16 Appendix: Elliptic functions; Bibliography.