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4 votes
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Computing a cone in a $\otimes$-triangulated category

In what follows I am going to assume $\mathcal{T}$ is the homotopy category of a stably symmetric monoidal ∞-category. The argument I am going to give can probably be generalized to any case of intere …
Denis Nardin's user avatar
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20 votes
Accepted

Tensor product of fields over integers

I already wrote this in the comments but I think this might be worth of an answer. I think we can classify all fields $K$ such that $K\otimes K$ is a field. Claim If $K$ is a field such that $K\otime …
Denis Nardin's user avatar
  • 16.5k