Everyone knows what braids are, whether they be made of hair, knitting wool, or electrical cables. However, it is not so evident that we can construct a theory about them, i.e. to elaborate a coherent and mathematically interesting corpus of results concerning them. This book demonstrates that there is a resoundingly positive response to this question: braids are fascinating objects, with a variety of rich mathematical properties and potential applications. A special emphasis is placed on the algorithmic aspects and on what can be called the 'calculus of braids', in particular the problem of isotopy. Prerequisites are kept to a minimum, with most results being established from scratch. An appendix at the end of each chapter gives a detailed introduction to the more advanced notions required, including monoids and group presentations. Also included is a range of carefully selected exercises to help the reader test their knowledge, with solutions available.

This introduction to braid groups keeps prerequisites to a minimum, while discussing their rich mathematical properties and applications.

About the Author
Patrick Dehornoy (1952-2019) was Professor Emeritus at Universite Caen Normandie, and Senior Member Emeritus of the Institut Universitaire de France. His research focused on set theory, algebra, and topology in small dimensions. He authored close to 100 research articles and eight books.


Book Information
ISBN 9781108925860
Author Patrick Dehornoy
Format Paperback
Page Count 220
Imprint Cambridge University Press
Publisher Cambridge University Press
Weight(grams) 400g
Dimensions(mm) 230mm * 150mm * 16mm