From: claudio pisani <pisclau@yahoo.it>
To: categories@mta.ca
Subject: (unknown)
Date: Sun, 14 Aug 2011 21:08:49 +0100 (BST) [thread overview]
Message-ID: <E1Qsnxs-0003UY-Q8@mlist.mta.ca> (raw)
Dear categorists (and topologists),
it is known (Clementino, Hofmann, Tholen, Richter, Niefield...) that perfect
maps p:X->Y are exponentiable in Top/Y, and that the same holds for local
homeomorphisms h:X->Y.
Question: is it true that
1) p=>h is a local homeomorphism
2) h=>p is a perfect map?
The conjecture is suggested by the following observations:
A) it holds both for Y = 1 (compact and discrete space) and for subspaces
inclusion (closed and open parts)
B) the analogy between perfect maps and local homeomorphisms with discrete
(op)fibrations (via convergence or other considerations) and the fact that 1)
and 2) above hold in Cat/Y: if p is a discrete fibration and h is a discrete
opfibration then p=>h is itself a discrete opfibration (and conversely).
Best regards,
Claudio
[For admin and other information see: http://www.mta.ca/~cat-dist/ ]
next reply other threads:[~2011-08-14 20:08 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-14 20:08 claudio pisani [this message]
-- strict thread matches above, loose matches on Subject: below --
2022-12-29 22:47 (unknown) Valeria de Paiva
2021-02-19 15:50 (unknown) Marco Grandis
2019-07-20 7:28 (unknown) Marco Grandis
2017-02-16 16:43 (unknown) Jean Benabou
2016-04-11 8:35 (unknown) Timothy Porter
2010-06-29 7:29 (unknown) Erik Palmgren
2009-11-19 23:25 (unknown) claudio pisani
2009-04-29 15:27 (unknown) Unknown
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2006-03-16 2:08 (unknown) jim stasheff
2006-03-16 2:07 (unknown) jim stasheff
2006-03-16 1:58 (unknown) jim stasheff
2006-03-16 1:53 (unknown) jim stasheff
2000-02-12 17:23 (unknown) James Stasheff
1998-05-24 4:31 (unknown) Ralph Leonard Wojtowicz
1998-05-12 15:09 (unknown) esik
1998-02-15 11:43 (unknown) esik
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