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Modification systems and integration in their Chow groups

    1. [1] Max Planck Institute for Mathematics

      Max Planck Institute for Mathematics

      Kreisfreie Stadt Bonn, Alemania

  • Localización: Selecta Mathematica, New Series, ISSN 1022-1824, Vol. 11, Nº. 2, 2005, págs. 155-202
  • Idioma: inglés
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  • Resumen
    • We introduce a notion of integration on the category of proper birational maps to a given variety X, with value in an associated Chow group. Applications include new birational invariants; comparison results for Chern classes and numbers of nonsingular birational varieties; ‘stringy’ Chern classes of singular varieties; and a zeta function specializing to the topological zeta function.

      In its simplest manifestation, the integral gives a new expression for Chern–Schwartz–MacPherson classes of possibly singular varieties, placing them into a context in which a ‘change-of-variable’ formula holds.


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