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Search options not deleted user 2024

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

6 votes
1 answer
861 views

What should Spec Z[\sqrt{D}] x_{F_1} Spec \bar{F_1} be?

What should be $\text{Spec } \mathbb{Z}[\sqrt{D}] \times_{\mathbb{F}_1} \text{Spec } \overline{\mathbb{F}}_{1}$? Sure, there's more than one definition. I'm looking for any answer that uses at least …
Dror Speiser's user avatar
  • 4,593
29 votes
2 answers
4k views

What is the algebraic closure of the field with one element?

If doing geometry over $\mathbb F_p$ means also using its algebraic closure, it must be interesting to talk about the algebraic closure of $\mathbb F_1$ - the field with one element. I saw that the f …
Dror Speiser's user avatar
  • 4,593