TY  - GEN
AU  - Adem, Alejandro
AU  - Leida, Johann
AU  - Ruan, Yongbin
TI  - Orbifolds and stringy topology
SN  - 9780521870047
U1  - 514.34 
PY  - 2007///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Orbifolds
KW  - Topology
KW  - Quantum theory
KW  - String models
KW  - Homology theory
KW  - Manifolds--Mathematics
N1  - Includes references and index
N2  - An introduction to the theory of orbifolds from a modern perspective, combining techniques from geometry, algebraic topology and algebraic geometry. One of the main motivations, and a major source of examples, is string theory, where orbifolds play an important role. The subject is first developed following the classical description analogous to manifold theory, after which the book branches out to include the useful description of orbifolds provided by groupoids, as well as many examples in the context of algebraic geometry. Classical invariants such as de Rham cohomology and bundle theory are developed, a careful study of orbifold morphisms is provided, and the topic of orbifold K-theory is covered. The heart of this book, however, is a detailed description of the Chen-Ruan cohomology, which introduces a product for orbifolds and has had significant impact. The final chapter includes explicit computations for a number of interesting examples.

https://www.cambridge.org/core/books/orbifolds-and-stringy-topology/677A8058E1D88669C8EE85FF2442CFCD#fndtn-information
ER  -