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@ 2007-03-06 23:55 Peter May
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From: Peter May @ 2007-03-06 23:55 UTC (permalink / raw)
To: categories
1971, not 1982, was when operads were defined.
Certainly I did not know multicategories, but
they only correspond to non-sigma operads,
operads without permutations, and I would not
have bothered inventing a word just for them.
Precisely, multicategories are the many object
version of non-sigma operads. The point is
that the applications for which operads were
invented depend vitally on the permutations.
Peter May
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