From: Susan Niefield <niefiels@union.edu>
To: categories@mta.ca
Subject: horizontal composition
Date: Fri, 27 Jan 2006 11:17:42 -0500 (EST) [thread overview]
Message-ID: <Pine.OSF.4.40.0601271017530.78550-100000@idol.union.edu> (raw)
Does anyone know of a reference for the following definition of a
bicategory? The primitive composites are:
gf for composable 1-cells
GF for vertically composable 2-cells
f*G and F*g for horizontally composable pairs of each
with appropriate axioms including (G*f')(g*F)=(g'*F)(G*f), for
F:f->f':X->Y and G:g->g':Y->Z. The horizontal composite G*F is defined to
be the common value of the two vertical composites.
-Susan
next reply other threads:[~2006-01-27 16:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-27 16:17 Susan Niefield [this message]
2006-01-31 12:53 grandis
2006-01-31 19:22 jean benabou
2006-02-02 7:15 Marco Grandis
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