Locally effective objects and algebraic topology

  • Julio Rubio
  • Francis Sergeraert
Conference paper
Part of the Progress in Mathematics book series (PM, volume 109)


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.


Topological Space Spectral Sequence Chain Complex Homology Group Finite Type 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Birkhäuser Boston 1993

Authors and Affiliations

  • Julio Rubio
    • 1
  • Francis Sergeraert
    • 2
  1. 1.Dpto. InformáticaZaragozaSpain
  2. 2.Institut FourierL.M.C.Saint Martin d’HèresFrance

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