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Orbifolds and Stringy Topology

Orbifolds and Stringy Topology

Part of Cambridge Tracts in Mathematics

  • Date Published: May 2007
  • availability: Available
  • format: Hardback
  • isbn: 9780521870047

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  • 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.

    • Was the first comprehensive study of orbifolds from the modern point of view, emphasizing motivation from, and connections to, topology, geometry and physics
    • Many useful and interesting examples considered
    • A detailed description of the Chen-Ruan cohomology coauthored by one of its creators
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    Product details

    • Date Published: May 2007
    • format: Hardback
    • isbn: 9780521870047
    • length: 164 pages
    • dimensions: 229 x 152 x 13 mm
    • weight: 0.41kg
    • availability: Available
  • Table of Contents

    Introduction
    1. Foundations
    2. Cohomology, bundles and morphisms
    3. Orbifold K-theory
    4. Chen-Ruan cohomology
    5. Calculating Chen-Ruan cohomology
    Bibliography
    Index.

  • Authors

    Alejandro Adem, University of British Columbia, Vancouver
    Alejandro Adem is Professor of Mathematics at the University of British Columbia in Vancouver.

    Johann Leida, University of Wisconsin, Madison
    Johann Leida was a graduate student at the University of Wisconsin where he obtained his PhD in 2006 with a thesis on the homotopy theory of orbifolds.

    Yongbin Ruan, University of Michigan, Ann Arbor
    Yongbin Ruan is Professor of Mathematics at the University of Michigan in Ann Arbor.

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