Subject: question about hopf fibration
From: "Priyavrat Deshpande" <priyavrat@gmail.com>
Date: Fri, 10 Mar 2006 21:33:25 +0530

If I have a (polynomial) map from S^7 to S^4, is there a concrete
method or some criterion to check whether the given map is a
fibration. Most of the book does not contain any explicit theorem
about this. Any reference would be helpful.

Priyavrat Deshpande