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Search options not deleted user 318

This tag refers to the (non-existent) "field of one element".

17 votes
Accepted

K(F_1) = sphere spectrum?

I understand that this is because GLn(F1) is supposed to be Sigman, the symmetric group on n letters. Thus K(F1) = K(finite sets) which is the sphere spectrum by the Barratt-Priddy-Quillen-Segal theor …
Oscar Randal-Williams's user avatar
13 votes
Accepted

Fundamental theorem of K-theory for loop groups over $\mathbb{F}_1$?

Let $G_n := W(\tilde{A}_{n-1})$. If I understand your description correctly, there is an extension $$1 \to G_n \to S_{n} \wr \mathbb{Z} \overset{sum}\to \mathbb{Z} \to 1$$ and so a $\mathbb{Z}$-Galois …
Oscar Randal-Williams's user avatar