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Locally effective objects and algebraic topology

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Computational Algebraic Geometry

Part of the book series: Progress in Mathematics ((PM,volume 109))

Abstract

Algebraic topology consists of associating invariants are of an algebraic nature, describing certain topological properties. For example, since Poincaré, it is known how to associate the group π1(X,x 0 to a topological space X and to one of its points x 0; this group is called the Poincaré group or the first homotopy group of the space X based on x 0. This group is null if and only if the space X is simply connected at x 0; in another case, the group measures the lack of simple connectivity. Many other groups can be associated to a topological space, evaluating certain properties of this space: homology groups,K-theory groups,etc.

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© 1993 Birkhäuser Boston

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Rubio, J., Sergeraert, F. (1993). Locally effective objects and algebraic topology. In: Eyssette, F., Galligo, A. (eds) Computational Algebraic Geometry. Progress in Mathematics, vol 109. Birkhäuser, Boston, MA. https://doi.org/10.1007/978-1-4612-2752-6_17

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  • DOI: https://doi.org/10.1007/978-1-4612-2752-6_17

  • Publisher Name: Birkhäuser, Boston, MA

  • Print ISBN: 978-1-4612-7652-4

  • Online ISBN: 978-1-4612-2752-6

  • eBook Packages: Springer Book Archive

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