From: Per <perj@mat-stat.uit.no>
To: categories@mta.ca
Subject: Extension of natural transformations
Date: Fri, 27 Apr 2001 08:48:14 +0200 [thread overview]
Message-ID: <3AE9162E.7030606@math.uit.no> (raw)
Is there anything known about the following type of problem.
Let F,G : C -> D be functors and let E be a subcategory of C and let
F' G' be the restirctions of F and G to E. Let a' : F' -> G' be a
natural transformation.
When does there exist a natural transformation alpha : F -> G that
extends alpha' so that alpha restricted to E is equal to alpha'?
What if E is a set of generators for C?
Thanks
Per K. Jakobsen
reply other threads:[~2001-04-27 6:48 UTC|newest]
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