Categorical Homotopy Theory
$99.00
Part of New Mathematical Monographs
 Author: Emily Riehl
 Date Published: May 2014
 availability: In stock
 format: Hardback
 isbn: 9781107048454
$99.00
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This book develops abstract homotopy theory from the categorical perspective with a particular focus on examples. Part I discusses two competing perspectives by which one typically first encounters homotopy (co)limits: either as derived functors definable when the appropriate diagram categories admit a compatible model structure, or through particular formulae that give the right notion in certain examples. Riehl unifies these seemingly rival perspectives and demonstrates that model structures on diagram categories are irrelevant. Homotopy (co)limits are explained to be a special case of weighted (co)limits, a foundational topic in enriched category theory. In Part II, Riehl further examines this topic, separating categorical arguments from homotopical ones. Part III treats the most ubiquitous axiomatic framework for homotopy theory – Quillen's model categories. Here, Riehl simplifies familiar model categorical lemmas and definitions by focusing on weak factorization systems. Part IV introduces quasicategories and homotopy coherence.
Read more Gives a unified presentation of the theory of homotopy limits and colimits
 Isolates the key categorical components of the definition of a model category
 Discusses the enriched category theory relevant to homotopy theory
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×Product details
 Date Published: May 2014
 format: Hardback
 isbn: 9781107048454
 length: 320 pages
 dimensions: 228 x 152 mm
 contains: 55 exercises
 availability: In stock
Table of Contents
Part I. Derived Functors and Homotopy (Co)limits:
1. All concepts are Kan extensions
2. Derived functors via deformations
3. Basic concepts of enriched category theory
4. The unreasonably effective (co)bar construction
5. Homotopy limits and colimits: the theory
6. Homotopy limits and colimits: the practice
Part II. Enriched Homotopy Theory:
7. Weighted limits and colimits
8. Categorical tools for homotopy (co)limit computations
9. Weighted homotopy limits and colimits
10. Derived enrichment
Part III. Model Categories and Weak Factorization Systems:
11. Weak factorization systems in model categories
12. Algebraic perspectives on the small object argument
13. Enriched factorizations and enriched lifting properties
14. A brief tour of Reedy category theory
Part IV. QuasiCategories:
15. Preliminaries on quasicategories
16. Simplicial categories and homotopy coherence
17. Isomorphisms in quasicategories
18. A sampling of 2categorical aspects of quasicategory theory.