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Article #143A question about inf-categories
From: Leif Johansson
Date: Fri, 11 Dec 1992 08:33
Date: Fri, 11 Dec 1992 08:33
33 lines
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1734 bytes
I would very much appreciate any info on inifinity-categories that
are also "triangulated" - what is the correct notion anyway? Any
standard references are wellcomed. Reply through email to
leifj@matematik.su.se
For those not familiar with \inf-categories, here's the definition:
A \inf-category is a class A of morphisms such that there for all integers n
is a subclass of A denoted A_n with Ob A_n \subset Ob A_{n+1} and the structure
of a category on A_n with compatibility conditions on these category structures
making A into a Kan-komplex with the added condition that the completion of
n+1 compatible n-faces to an n+1 face is unique (which is not always the case
with Kan-komplexes). Compatible in the above is like in the picture below:
|
|
|
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to be completed to
|\
| \
| \
| \
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(sorry for the angle mismatch..) A good ref. for the definition is: "The
equivalence of \inf-groupoids and crossed complexes." by Brown and Higgins in
Cah. de Top. et Geom. Diff. Vol 22 1981.
Thanx in advance.
MVH leifj
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arc1-ca.pugleaf.net!sparky!uunet!elroy.jpl.nasa.gov!usc!wupost!crcnis1.unl.edu!moe.ksu.ksu.edu!ux1.cso.uiuc.edu!news.cso.uiuc.edu!danShow Full Headers
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Newsgroups: sci.math.research Path: arc1-ca.pugleaf.net!sparky!uunet!elroy.jpl.nasa.gov!usc!wupost!crcnis1.unl.edu!moe.ksu.ksu.edu!ux1.cso.uiuc.edu!news.cso.uiuc.edu!dan From: Leif Johansson <leifj@matematik.su.se> Subject: A question about inf-categories Message-ID: <9212110833.AA11121@candida.matematik.su.se> Originator: dan@symcom.math.uiuc.edu Sender: Daniel Grayson <dan@math.uiuc.edu> Followup-To: poster X-Submissions-To: sci-math-research@uiuc.edu Organization: University of Illinois at Urbana X-Administrivia-To: sci-math-research-request@uiuc.edu Approved: Daniel Grayson <dan@math.uiuc.edu> Date: Fri, 11 Dec 1992 08:33:50 GMT Lines: 34