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visits | member for | 5 years, 4 months |
seen | Jan 3 '14 at 9:16 | |
stats | profile views | 3,601 |
I'm interested in many things, but algebraic geometry I love.
Feb
12 |
comment |
Are there n polynomials for which all intersection multiplicities are at least m?
@Mahdi: I don't see why that would solve it. It would just change the intersection number over $x=a$, but not over other values of $x$. |
Feb
12 |
revised |
Are there n polynomials for which all intersection multiplicities are at least m?
added 141 characters in body; added 6 characters in body; added 44 characters in body |
Feb
12 |
comment |
Are there n polynomials for which all intersection multiplicities are at least m?
Hmmm, let me clarify in the body of the question. |
Feb
12 |
asked | Are there n polynomials for which all intersection multiplicities are at least m? |
Feb
4 |
answered | Why should the anabelian geometry conjectures be true? |
Jan
25 |
asked | What is the obstruction for a local set of models of a curve to come from a global model? |
Dec
25 |
awarded | Popular Question |
Dec
11 |
accepted | Where was Riemann Existence first proven? |
Dec
10 |
comment |
Where was Riemann Existence first proven?
I meant the following: any topological cover of an algebraic variety defined over the complex numbers can be given an algebraic variety structure such that the covering map is algebraic. |
Dec
10 |
asked | Where was Riemann Existence first proven? |
Nov
24 |
comment |
General cohomology groups and motives
@Daniel: While I agree that this seems to have no clear answer and is therefore worthy of closing down, I completely disagree that MO should not be the first place to go to with this sort of question. It is precisely the collective knowledge of mathematicians that I want to tap into. There is clearly no book about this; if there are papers about it they would be hard to find; and if individuals don't know the answer it doesn't mean that an answer doesn't exist. This is precisely what mathoverflow is for. |
Nov
24 |
comment |
General cohomology groups and motives
@Daniel: Alas, I did not. My understanding of Langlands is rudimentary at best. I was trying to place Langlands, which is a statement about Galois actions on certain groups coming from schemes, in the context of general Galois actions on groups coming from schemes. |
Nov
24 |
comment |
General cohomology groups and motives
@Daniel: that's a very good point. Does $H^i(X,\mathbb{Q}_p)$ being automorphic imply anything of any content about the representation $H^i(X,\mathbb{Z}/p^n\mathbb{Z})$? |
Nov
23 |
comment |
General cohomology groups and motives
I'm not sure if lisse l-adic sheaf is really what I would be looking for. Ideally, I would like a statement that would also make sense for $\mathcal{F}$ a linear algebraic group scheme (which would restrict us to non-abelian cohomology), although that might be asking too much. For now it would suffice to restrict ourselves to sheaves into abelian groups. |
Nov
23 |
comment |
General cohomology groups and motives
Hmm... I was careless with my speech. You are right that I meant $\mathcal{F}$ as sheaf on the etale site on $X$ rather than $X$. (I viewed that as implicit by the fact that I look at $H_{et}^*(X,\mathcal{F})$.) Your other comment is more substantive -- is it true that $H^i_{et}(X,\mathbb{Q}_p)$ where $\mathbb{Q}_p$ is the constant sheaf on the etale site over $X$ is different from the inverse limit of the $H^i_{et}(X,\mathbb{Z}/p^i\mathbb{Z})$? |
Nov
23 |
asked | General cohomology groups and motives |
Nov
18 |
awarded | Popular Question |
Nov
16 |
accepted | Did Grothendieck have a plan for proving Riemann Existence algebraically? |
Nov
15 |
awarded | Nice Question |
Nov
14 |
awarded | Popular Question |