A Remark on the Hopf invariant for Spherical 4-braids
Professor in IZMIRAN, Troitsk, Moscow region, Russia
- *Corresponding Author:
- Dr. Akhmet’ev PM
IZMIRAN, Troitsk, Moscow region,Russia
Tel: +7(4967) 510912
E-mail: [email protected]
Received Date: October 31, 2013; Accepted Date: January 28, 2014; Published Date: March 10, 2014
Citation: Akhmet’ev PM (2014) A Remark on the Hopf invariant for Spherical 4-braids. J Phys Math 5:124 doi: 10.4172/2090-0902.1000124
Copyright: © 2014 Akhmet’ev PM. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
An approach by J.Wu describes homotopy groups πn(S2) of the standard 2-sphere as isotopy classes of spherical n+1--strand Brunnian braids. The case n=3 is investigated for applications.