Groups of embedded manifolds
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- by Max K. Agoston PDF
- Trans. Amer. Math. Soc. 154 (1971), 365-375 Request permission
Abstract:
This paper defines a group $\theta ({M^n},{\nu _\varphi })$ which generalizes the group of framed homotopy n-spheres in ${S^{n + k}}$. Let ${M^n}$ be an arbitrary 1-connected manifold satisfying a weak condition on its homology in the middle dimension and let ${\nu _\varphi }$ be the normal bundle of some imbedding $\varphi :{M^n} \to {S^{n + k}}$, where $2k \geqq n + 3$. Then $\theta ({M^n},{\nu _\varphi })$ is the set of h-cobordism classes of triples $(F,{V^n},f)$, where $F:{S^{n + k}} \to T({\nu _\varphi })$ is a map which is transverse regular on M, ${V^n} = {F^{ - 1}}({M^n})$, and $f = F|{V^n}$ is a homotopy equivalence. ($T({\nu _\varphi })$ is the Thom complex of ${\nu _\varphi }$.) There is a natural group structure on $\theta ({M^n},{\nu _\varphi })$, and $\theta ({M^n},{\nu _\varphi })$ fits into an exact sequence similar to that for the framed homotopy n-spheres.References
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Additional Information
- © Copyright 1971 American Mathematical Society
- Journal: Trans. Amer. Math. Soc. 154 (1971), 365-375
- MSC: Primary 57.10
- DOI: https://doi.org/10.1090/S0002-9947-1971-0273628-6
- MathSciNet review: 0273628