From: Neil Ghani <Neil.Ghani@cis.strath.ac.uk>
To: categories@mta.ca
Subject: Sigma and Products
Date: Fri, 10 Dec 2010 09:45:27 +0000 [thread overview]
Message-ID: <E1PR28s-0006AO-HH@mlist.mta.ca> (raw)
Hi
Sorry ... nothing deep or fundamental here.
Here is a simple question which someone may know the answer to.
Lets say we have a fibration p:E -> B with left adjoints Sigma_f for every reindexing functor f^*. Lets say further that E has products and p preserves them.
Are there simple conditions under which we have
Sigma_{f \times g} (P \times Q)
iso
(Sigma_f P) \times (Sigma_g Q)
All the best
Neil
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next reply other threads:[~2010-12-10 9:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-10 9:45 Neil Ghani [this message]
2010-12-14 22:40 ` Michael Shulman
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