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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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On proper homotopy theory for noncompact $3$-manifolds
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by E. M. Brown and T. W. Tucker PDF
Trans. Amer. Math. Soc. 188 (1974), 105-126 Request permission

Abstract:

Proper homotopy groups analogous to the usual homotopy groups are defined. They are used to prove, modulo the Poincaré conjecture, that a noncompact 3-manifold having the proper homotopy type of a closed product $F \times [0,1]$ or a half-open product $F \times [0,1)$ where F is a 2-manifold is actually homeomorphic to $F \times [0,1]$ or $F \times [0,1)$, respectively. By defining a concept for noncompact manifolds similar to boundary-irreducibility, a well-known result of Waldhausen concerning homotopy and homeomorphism type of compact 3-manifolds is extended to the noncompact case.
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Additional Information
  • © Copyright 1974 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 188 (1974), 105-126
  • MSC: Primary 57A65
  • DOI: https://doi.org/10.1090/S0002-9947-1974-0334225-X
  • MathSciNet review: 0334225