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Transactions of the American Mathematical Society

Published by the American Mathematical Society since 1900, Transactions of the American Mathematical Society is devoted to longer research articles in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2020 MCQ for Transactions of the American Mathematical Society is 1.48.

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Poincaré-Hopf inequalities
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by M. A. Bertolim, M. P. Mello and K. A. de Rezende PDF
Trans. Amer. Math. Soc. 357 (2005), 4091-4129 Request permission

Abstract:

In this article the main theorem establishes the necessity and sufficiency of the Poincaré-Hopf inequalities in order for the Morse inequalities to hold. The convex hull of the collection of all Betti number vectors which satisfy the Morse inequalities for a pre-assigned index data determines a Morse polytope defined on the nonnegative orthant. Using results from network flow theory, a scheme is provided for constructing all possible Betti number vectors which satisfy the Morse inequalities for a pre-assigned index data. Geometrical properties of this polytope are described.
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Additional Information
  • M. A. Bertolim
  • Affiliation: Department of Mathematics, Institute of Mathematics, Statistics and Scientific Computation, Unicamp, Campinas, São Paulo, Brazil
  • Email: bertolim@ime.unicamp.br
  • M. P. Mello
  • Affiliation: Department of Applied Mathematics, Institute of Mathematics, Statistics and Scientific Computation, Unicamp, Campinas, São Paulo, Brazil
  • Email: margarid@ime.unicamp.br
  • K. A. de Rezende
  • Affiliation: Department of Mathematics, Institute of Mathematics, Statistics and Scientific Computation, Unicamp, Campinas, São Paulo, Brazil
  • Email: ketty@ime.unicamp.br
  • Received by editor(s): February 6, 2003
  • Received by editor(s) in revised form: December 2, 2003
  • Published electronically: October 28, 2004
  • Additional Notes: The first author was supported by FAPESP under grant 02/08400-3
    The second author was supported by CNPq-PRONEX Optimization and by FAPESP under grant 01/04597-4
    The third author was partially supported by FAPESP under grants 00/05385-8 and 02/102462, and by CNPq under grant 300072
  • © Copyright 2004 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 357 (2005), 4091-4129
  • MSC (2000): Primary 37B30, 37B35, 37B25; Secondary 54H20
  • DOI: https://doi.org/10.1090/S0002-9947-04-03641-4
  • MathSciNet review: 2159701