Commuting involutions whose fixed point set consists of two special components

Pedro L. Q. Pergher; Rogério de Oliveira

Fundamenta Mathematicae (2008)

  • Volume: 201, Issue: 3, page 241-259
  • ISSN: 0016-2736

Abstract

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Let Fⁿ be a connected, smooth and closed n-dimensional manifold. We call Fⁿ a manifold with property when it has the following property: if N m is any smooth closed m-dimensional manifold with m > n and T : N m N m is a smooth involution whose fixed point set is Fⁿ, then m = 2n. Examples of manifolds with this property are: the real, complex and quaternionic even-dimensional projective spaces R P 2 n , C P 2 n and H P 2 n , and the connected sum of R P 2 n and any number of copies of Sⁿ × Sⁿ, where Sⁿ is the n-sphere and n is not a power of 2. In this paper we describe the equivariant cobordism classification of smooth actions ( M m ; Φ ) of the group Z k on closed smooth m-dimensional manifolds M m for which the fixed point set of the action consists of two components K and L with property , and where dim(K) < dim(L). The description is given in terms of the set of equivariant cobordism classes of involutions fixing K ∪ L.

How to cite

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Pedro L. Q. Pergher, and Rogério de Oliveira. "Commuting involutions whose fixed point set consists of two special components." Fundamenta Mathematicae 201.3 (2008): 241-259. <http://eudml.org/doc/282845>.

@article{PedroL2008,
abstract = {Let Fⁿ be a connected, smooth and closed n-dimensional manifold. We call Fⁿ a manifold with property when it has the following property: if $N^m$ is any smooth closed m-dimensional manifold with m > n and $T:N^m → N^m$ is a smooth involution whose fixed point set is Fⁿ, then m = 2n. Examples of manifolds with this property are: the real, complex and quaternionic even-dimensional projective spaces $RP^\{2n\}$, $CP^\{2n\}$ and $HP^\{2n\}$, and the connected sum of $RP^\{2n\}$ and any number of copies of Sⁿ × Sⁿ, where Sⁿ is the n-sphere and n is not a power of 2. In this paper we describe the equivariant cobordism classification of smooth actions $(M^m; Φ)$ of the group $Z₂^k$ on closed smooth m-dimensional manifolds $M^m$ for which the fixed point set of the action consists of two components K and L with property , and where dim(K) < dim(L). The description is given in terms of the set of equivariant cobordism classes of involutions fixing K ∪ L.},
author = {Pedro L. Q. Pergher, Rogério de Oliveira},
journal = {Fundamenta Mathematicae},
keywords = {-action; fixed data; property ; simultaneous cobordism; equivariant cobordism; characteristic number; projective bundle},
language = {eng},
number = {3},
pages = {241-259},
title = {Commuting involutions whose fixed point set consists of two special components},
url = {http://eudml.org/doc/282845},
volume = {201},
year = {2008},
}

TY - JOUR
AU - Pedro L. Q. Pergher
AU - Rogério de Oliveira
TI - Commuting involutions whose fixed point set consists of two special components
JO - Fundamenta Mathematicae
PY - 2008
VL - 201
IS - 3
SP - 241
EP - 259
AB - Let Fⁿ be a connected, smooth and closed n-dimensional manifold. We call Fⁿ a manifold with property when it has the following property: if $N^m$ is any smooth closed m-dimensional manifold with m > n and $T:N^m → N^m$ is a smooth involution whose fixed point set is Fⁿ, then m = 2n. Examples of manifolds with this property are: the real, complex and quaternionic even-dimensional projective spaces $RP^{2n}$, $CP^{2n}$ and $HP^{2n}$, and the connected sum of $RP^{2n}$ and any number of copies of Sⁿ × Sⁿ, where Sⁿ is the n-sphere and n is not a power of 2. In this paper we describe the equivariant cobordism classification of smooth actions $(M^m; Φ)$ of the group $Z₂^k$ on closed smooth m-dimensional manifolds $M^m$ for which the fixed point set of the action consists of two components K and L with property , and where dim(K) < dim(L). The description is given in terms of the set of equivariant cobordism classes of involutions fixing K ∪ L.
LA - eng
KW - -action; fixed data; property ; simultaneous cobordism; equivariant cobordism; characteristic number; projective bundle
UR - http://eudml.org/doc/282845
ER -

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