bio  website  people.virginia.edu/~btw4e 

location  Charlottesville, VA  
age  33  
visits  member for  5 years, 5 months 
seen  3 hours ago  
stats  profile views  18,194 
I'm an Assistant Professor at the University of Virginia. My interests are geometric representation theory, knot homology and categorification.
1d

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BeilinsonBernstein localization: $\mathfrak{g}$ action on $G$equivariant sheaf
@NilayKumar The function $g$ is the derivative of f with respect to $a$. This is proven exactly like the multiplication rule in first year calculus. 
1d

answered  BeilinsonBernstein localization: $\mathfrak{g}$ action on $G$equivariant sheaf 
2d

comment 
Deformations of associative algebras and Hochschild cohomology
You're really trying to reinvent the wheel here. This is all in Hochschild's papers "The deformation theory of rings and algebras IIV" from the 60's. 
Mar 16 
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Mixed Hodge structure and cup product
Also, seriously? 3 close votes? I understand it's not the best written question and the answer is reasonably "wellknown," but mixed Hodge structures are too basic for this site now? 
Mar 16 
comment 
Mixed Hodge structure and cup product
@abx You should write that as an answer! 
Mar 14 
reviewed  Close Sorting circles sizes with points in integers lattice 
Mar 9 
comment 
Realistic exit strategy for pure mathematics faculty at liberal arts colleges
While I think this is a good question, it seems unlikely that there really is a good answer (as they say, it's tough to make predictions, especially about the future). In particular, the amount of preparation needed depends quite a bit on how many colleges are closing/downsizing in the hypothetical scenario where yours does. A couple per year, or dozens? 
Mar 1 
asked  For which quiver varieties is Kirwan surjectivity known? 
Feb 28 
awarded  Guru 
Feb 27 
revised 
Why can we not always take a Kähler class to be in rational cohomology?
edited body; edited title 
Feb 27 
answered  Decomposition of semi simple local systems 
Feb 24 
comment 
Dmodules, deRham spaces and microlocalization
@მამუკაჯიბლაძე It's fixed now. I just meant to say that it was the structure sheaf. 
Feb 24 
revised 
Dmodules, deRham spaces and microlocalization
added 24 characters in body 
Feb 24 
awarded  Good Question 
Feb 11 
comment 
Continuous families of finite subgroups of a Lie group
@PaulTaylor Which Misha answered. The space of representations of a finite group into a Lie group is a discrete union of conjugacy classes, so any continuous map from a connected topological space lands inside one conjugacy class. 
Feb 10 
answered  Equivariant Derived Category 
Feb 8 
awarded  Nice Answer 
Feb 7 
revised 
An example of an object in $D^b_{\text{coh}}(\mathbb{P}^2)$ which is not formal
added 274 characters in body 
Feb 7 
answered  An example of an object in $D^b_{\text{coh}}(\mathbb{P}^2)$ which is not formal 
Feb 7 
comment 
counting how many boxes from a given Young tableau contribute to hook length made out of two YTs
Sorry, what's your question? I don't think "Please write the proof of this combinatorial lemma for me" is an appropriate use of the site. How the heck did you come up with this if you don't already know the proof? 