Search Results
Search type | Search syntax |
---|---|
Tags | [tag] |
Exact | "words here" |
Author |
user:1234 user:me (yours) |
Score |
score:3 (3+) score:0 (none) |
Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
Views | views:250 |
Code | code:"if (foo != bar)" |
Sections |
title:apples body:"apples oranges" |
URL | url:"*.example.com" |
Saves | in:saves |
Status |
closed:yes duplicate:no migrated:no wiki:no |
Types |
is:question is:answer |
Exclude |
-[tag] -apples |
For more details on advanced search visit our help page |
Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology.
4
votes
0
answers
105
views
Construction of intersection forms for semismall maps
I am reading De Cataldo and Migliorini's beautiful paper "the hard Lefschetz theorem and the topology of semismall maps", where they construct an intersection form for each relevant strata, and whose …
2
votes
0
answers
184
views
Is the Lie algebra of a flat group scheme still flat?
Let $\mathcal{O}$ be a discrete valuation ring, and $\mathcal{G}$ is a flat group scheme over $\mathcal{O}$, we may assume the generic fiber is reductive. Then can we define its Lie algebra, and wheth …
2
votes
1
answer
224
views
Global section of differential operators on moduli stack of G bundles
I know the definition of the ring of differential operators, by using the smooth coverings. But I do not know how to calculate the global section.
Can anyone help explain that why the global section …
1
vote
Global section of differential operators on moduli stack of G bundles
A naive way to see why we need twist by square root of $\omega_{S}$ is the following.
Given $L:\omega_{S}^{1/2}\rightarrow \omega_{S}^{1/2}$, we can form its adjoint $L^{t}:\omega_{S}^{1/2}\rightarrow …
4
votes
0
answers
106
views
Is there Thom isomorphism for equivariant K groups in algebraic geometry, not necessarily co...
In Chriss and Ginzburg's fantastic book 'representation theory and complex geometry', they use the following Thom Isomorphism:
$\pi:E\rightarrow X$, is a G-equivariant affine linear bundle, then $\pi …
4
votes
1
answer
573
views
kahler differential on hyperelliptic curves
Suppose $X$ is a projective smooth, geometrically connected, hyperelliptic curves over a field k, we may ask $X(k)\neq\varnothing$. I want to know how to compute the $H^{0}(X,\Omega_{X}^{1})$.
And th …
0
votes
Connection between 'Separated scheme of finite type over spec(k)' and 'Curve in $\mathbb R^n$
I think when you mention a smooth map, the condition seems appear in the category of diffential geometry, which is quite different. The concept of 1 dimensional separated scheme (since we consider cur …