Subject: Re: four questions
From: "Prof. A. R. Shastri" <ars@math.iitb.ac.in>
Date: Tue, 21 Mar 2006 18:55:37 +0530 (IST)

About Priyavrat's question I have this to say: The only `known method of 
checking that something is a fibration is to check whether it is a 
submersion. And, in your case, this seems to be appropriate. 

Anant Shastri

>> 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 S7 to S4, 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
>>