Subject: Re: question about S^3-actions (Modificado por Mtxo. 
Saralegi-Aranguren)
From: "Mtxo. Saralegi-Aranguren" <saralegi@free.fr>
Date: Sat, 22 Apr 2006 10:22:17 +0200

Sorry, a line was missed in my question;

> Dear Professor:
>
> I am looking for a Leray spectral sequence for a smooth action
> of the sphere S3 on a manifold.
> Of course, when the action is free or semi-free
> a such spectral sequence exists (indeed, a long exact sequence)
> whose second term is computed in terms of the cohomology of the 
orbit space  and the fixed points set.
> But, in the general case, could you give me a reference?
> Thanks in advance
>
> *************************************************
> Martintxo SARALEGI-ARANGUREN
> Laboratoire Mathématiques Lens (LML) EA 2462
> Fédération CNRS Nord-Pas-de-Calais FR 2956
> Université d’Artois
> rue Jean Souvraz S.P. 18
> 62 307 Lens Cedex
> France
> Tel. +33 3 21 79 17 20
> Fax. +33 3 21 79 17 29
> saralegi@euler.univ-artois.fr
>