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Results tagged with ag.algebraic-geometry
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user 1916
Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology.
28
votes
5
answers
3k
views
MaxSpec, Spec, ... "RadSpec"? Or, why not look at all radical ideals?
I was reading this question on why algebraic geometry looks at prime ideals instead of only maximal ideals, and I understand Anton's answer, but I'm a little confused as to how this fits with Hilbert' …
- 6,792
2
votes
1
answer
515
views
Kahler differentials of a hypersurface over a non-algebraically closed field
The following was recently on my algebraic geometry homework:
Let $k$ be an algebraically closed field, $f\in B=k[x_1,\ldots,x_n]$, and $A=B/(f)$. Show that $\Omega_{A/k}$ is locally free of rank …
- 6,792
8
votes
2
answers
2k
views
Can we relate Cech cohomology and derived functor cohomology even when the cover we choose i...
In my algebraic geometry class this semester, we've learned about Leray's Theorem, which states that for a sheaf $\mathcal{F}$ on a topological space $X$, and $\mathcal{U}$ a countable cover of $X$, i …
- 6,792