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6 votes
0 answers
162 views

Uniqueness of normal microbundle of a smooth embedding

Suppose $M$ is a topological manifold and $\iota: N\hookrightarrow M$ be a submanifold. A normal microbundle of $N$ consists of an open neighborhood $U$ of $N$ and a retraction $\pi: U \to N$ such ...
UVIR's user avatar
  • 803
5 votes
0 answers
93 views

Equivariant imbedding of compact manifold

Let $G$ be a compact Lie group smoothly acting on a smooth compact manifold $X$. Is it true that there exists a smooth $G$-equivariant imbedding of $X$ into a Euclidean space acted linearly (and ...
asv's user avatar
  • 21.8k
4 votes
0 answers
128 views

Spin bordism with non free involution

Is there a comprehensive account of GEOMETRIC equivariant spin bordism groups with respect to the group $ \mathbb{Z}/2$ (instead of homotopy theoretical trough equivariant Thom Spectra),...
Nicolas Boerger's user avatar