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Results tagged with ag.algebraic-geometry
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user 163893
Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology.
3
votes
2
answers
339
views
Some special subgroups of formal groups
Let $G$ be a 1-dimensional, commutative formal group over a ring $R$. Give $G$ a coordinate $x$ and let $A\subset R$ be the subring generated by the coefficients of the corresponding formal group law …
- 2,052
9
votes
0
answers
270
views
A kind of algebraic sphere?
Let $Sch$ be the 1-category of schemes. Is there a cosimplicial scheme $D^\bullet$ and a sequence of schemes $S_1, S_2, ...$ such that the geometric realization of the simplicial set $Hom_{Sch}(D^\bul …
- 2,052
4
votes
1
answer
358
views
Splitting the Witt vectors of $\overline{\mathbb{F}_p}$
Let $\overline{\mathbb{F}_p}$ be the algebraic closure of $\mathbb{F}_p$. Let $W({-})$ denote the functor of taking $p$-typical Witt vectors. Then the extension $\mathbb{F}_p\rightarrow \overline{\mat …
- 2,052