* comma objects
@ 2011-03-01 23:05 David Roberts
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From: David Roberts @ 2011-03-01 23:05 UTC (permalink / raw)
To: categories
Hi all,
when were (lax) comma objects in a 2-category introduced, and by whom?
By lax comma object I mean the thing described here:
http://ncatlab.org/nlab/show/comma+object, where \alpha is not
necessarily invertible.
Thanks,
David
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