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When is one thing equal to some other thing? [pdf]
(
math.harvard.edu
)
10 points
by
nickb
on July 27, 2008
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1 comment
jsomers
on July 27, 2008
[–]
This is very nicely written. Just a warning, though, that it's not quite light reading.
Pop quiz: what's a morphism of functors?
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Pop quiz: what's a morphism of functors?