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Stream: theory: category theory

Topic: A bounty over at Math Overflow


view this post on Zulip Ben Sprott (May 19 2021 at 00:27):

I have a 200 point bounty on a question over at Math Overflow. It's just asking to see details of the algebra for an endofunctor. Here is the link

view this post on Zulip Tom Hirschowitz (May 19 2021 at 07:12):

What do you mean exactly by "I would like to know about the algebra for this endofunctor composition"?

view this post on Zulip David Michael Roberts (May 19 2021 at 07:35):

I think Ben means an explicit nuts-and-bolts description of the algebras of the composite.

view this post on Zulip Tom Hirschowitz (May 19 2021 at 09:18):

But this is a bit weird, isn't it? Algebras for the multiset functor are... what? A kind of unbiased, non-associative monoid? @Ben Sprott, how sure are you that this is really what you want?