Polygraphs

From Rewriting to Higher Categories

Dimitri Ara (Aix-Marseille Université), Albert Burroni (Université Paris Cité), Yves Guiraud (Université Paris Cité) , Philippe Malbos (Université Claude Bernard Lyon 1)

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English

Cambridge University Press
03 April 2025

Mathematical logic; Algebraic topology; Mathematical theory of computation

Series: London Mathematical Society Lecture Note Series

This is the first book to revisit the theory of rewriting in the context of strict higher categories, through the unified approach provided by polygraphs, and put it in the context of homotopical algebra.

The first half explores the theory of polygraphs in low dimensions and its applications to the computation of the coherence of algebraic structures. Illustrated with algorithmic computations on algebraic structures, the only prerequisite in this section is basic category theory. The theory is introduced step-by-step, with detailed proofs. The second half introduces and studies the general notion of n-polygraph, before addressing the homotopy theory of these polygraphs. It constructs the folk model structure on the category on strict higher categories and exhibits polygraphs as cofibrant objects. This allows the formulation of higher-dimensional generalizations of the coherence results developed in the first half. Graduate students and researchers in mathematics and computer science will find this work invaluable.

By: Dimitri Ara (Aix-Marseille Université), Albert Burroni (Université Paris Cité), Yves Guiraud (Université Paris Cité), Philippe Malbos (Université Claude Bernard Lyon 1), François Métayer (Université Paris Cité)
Imprint: Cambridge University Press
Country of Publication: United Kingdom
Dimensions: Height: 227mm, Width: 151mm, Spine: 31mm
Weight: 1.040kg
ISBN: 9781009498982
ISBN 10: 1009498983
Series: London Mathematical Society Lecture Note Series
Pages: 666
Publication Date: 03 April 2025
Audience: College/higher education , Further / Higher Education
Format: Paperback
Publisher's Status: Forthcoming

Part I. Fundamentals of Rewriting: 1. Abstract rewriting and one-dimensional polygraphs; 2. Two-dimensional polygraphs; 3. Operations on presentations; 4. String rewriting and 2-polygraphs; 5. Tietze transformations and completion; 6. Linear rewriting; Part II. Coherent Presentations: 7. Coherence by convergence; 8. Categories of finite derivation type; 9. Homological syzygies and confluence; Part III. Diagram Rewriting: 10. Three-dimensional polygraphs; 11. Termination of 3-polygraphs; 12. Coherent presentations of 2-categories; 13. Term rewriting systems; Part IV. Polygraphs: 14. Higher categories; 15. Polygraphs; 16. Properties of the category of 𝑛-polygraphs; 17. A catalogue of 𝑛-polygraphs; 18. Generalized polygraphs; Part V. Homotopy Theory of Polygraphs; 19. Polygraphic resolutions; 20. Towards the folk model structure; 21. The folk model structure; 22. Homology of 𝜔-categories; 23. Resolutions by (𝜔, 1)-polygraphs; Appendix A. A catalogue of 2-polygraphs; Appendix B. Examples of coherent presentations of monoids; Appendix C. A catalogue of 3-polygraphs; Appendix D. A syntactic description of free 𝑛-categories; Appendix E. Complexes and homology; Appendix F. Homology of categories; Appendix G. Locally presentable categories; Appendix H. Model categories; References; Index of notations; Index of terminology.Part I. Fundamentals of Rewriting: 1. Abstract rewriting and one-dimensional polygraphs; 2. Two-dimensional polygraphs; 3. Operations on presentations; 4. String rewriting and 2-polygraphs; 5. Tietze transformations and completion; 6. Linear rewriting; Part II. Coherent Presentations: 7. Coherence by convergence; 8. Categories of finite derivation type; 9. Homological syzygies and confluence; Part III. Diagram Rewriting: 10. Three-dimensional polygraphs; 11. Termination of 3-polygraphs; 12. Coherent presentations of 2-categories; 13. Term rewriting systems; Part IV. Polygraphs: 14. Higher categories; 15. Polygraphs; 16. Properties of the category of 𝑛-polygraphs; 17. A catalogue of 𝑛-polygraphs; 18. Generalized polygraphs; Part V. Homotopy Theory of Polygraphs: 19. Polygraphic resolutions; 20. Towards the folk model structure; 21. The folk model structure; 22. Homology of 𝜔-categories; 23. Resolutions by (𝜔, 1)-polygraphs; Appendix A. A catalogue of 2-polygraphs; Appendix B. Examples of coherent presentations of monoids; Appendix C. A catalogue of 3-polygraphs; Appendix D. A syntactic description of free 𝑛-categories; Appendix E. Complexes and homology; Appendix F. Homology of categories; Appendix G. Locally presentable categories; Appendix H. Model categories; References; Index of notations; Index of terminology.

Dimitri Ara is Associate Professor at Aix-Marseille Université. Albert Burroni is Associate Researcher at Université Paris Cité. Yves Guiraud is Researcher at Université Paris Cité. Philippe Malbos is Professor at Université Claude Bernard Lyon 1. Francois Métayer is Associate Professor Emeritus at Université Paris Cité. Samuel Mimram is Professor at the LIX laboratory of École Polytechnique.