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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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Bounded polynomial vector fields
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by Anna Cima and Jaume Llibre PDF
Trans. Amer. Math. Soc. 318 (1990), 557-579 Request permission

Abstract:

We prove that, for generic bounded polynomial vector fields in ${{\mathbf {R}}^n}$ with isolated critical points, the sum of the indices at all their critical points is ${( - 1)^n}$. We characterize the local phase portrait of the isolated critical points at infinity for any bounded polynomial vector field in ${{\mathbf {R}}^2}$. We apply this characterization to show that there are exactly seventeen different behaviours at infinity for bounded cubic polynomial vector fields in the plane.
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Additional Information
  • © Copyright 1990 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 318 (1990), 557-579
  • MSC: Primary 58F14; Secondary 34C40, 58F12, 58F25
  • DOI: https://doi.org/10.1090/S0002-9947-1990-0998352-5
  • MathSciNet review: 998352