Suspension theorems for links and link maps
Geometric Topology
2017-01-03 v3 Algebraic Topology
Abstract
We present a new short proof of the explicit formula for the group of links (and also link maps) in the 'quadruple point free' dimension. Denote by (respectively, ) the group of smooth embeddings (respectively, ) up to smooth isotopy. Denote by the group of link maps up to link homotopy. Theorem 1. If and then \begin{equation*} L^m_{p,q}\cong \pi_p(S^{m-q-1})\oplus\pi_{p+q+2-m}(SO/SO_{m-p-1})\oplus C^{m-p}_p\oplus C^{m-q}_q. \end{equation*} Theorem 2. If and then . Our approach is based on the use of the suspension operation for links and link maps, and suspension theorems for them.
Cite
@article{arxiv.math/0610320,
title = {Suspension theorems for links and link maps},
author = {Mikhail Skopenkov},
journal= {arXiv preprint arXiv:math/0610320},
year = {2017}
}
Comments
in English and in Russian, 12 pages, 3 figures; minor correction in the definition of the vertical homomorphisms in Theorem 3.5