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Stream: theory: category theory

Topic: Lax Boardman-Vogt tensor product of operads


view this post on Zulip Reuben Stern (they/them) (Nov 17 2023 at 15:16):

A duoidal category is a category equipped with a lax-commuting pair of monoidal structures. This feels like the kind if thing that should be expressable as an algebra over a "2-operad." Furthermore, it feels like this 2-operad should be expressable as a "lax BV-tensor product" of the associative operad with itself.

Is there a legitimate story here? My super general hope would be for a theory of n-operad for all n where there are inclusions OpdnOpdn+1\mathsf{Opd}_n \to \mathsf{Opd}_{n+1} that admit both left and right adjoints, under which the 2-operad parametrizing duoidal structures gets taken to either the E2\mathbb{E}_2 operad or the operad E1×E1\mathbb{E}_1 \times \mathbb{E}_1. Furthermore, this theory should somehow extend the Gray tensor product.

view this post on Zulip Todd Trimble (Nov 17 2023 at 16:28):

Reuben, have you been in touch with Zbigniew Fiedorowicz about this question?

view this post on Zulip Reuben Stern (they/them) (Nov 17 2023 at 18:42):

I haven't -- have they done work on this?

view this post on Zulip Todd Trimble (Nov 17 2023 at 21:10):

The topic smells related to their iterated monoidal categories, and so I thought possibly they've thought about this sort of thing.