bio  website  math.berkeley.edu/~vivek 

location  Berkeley, CA  
age  31  
visits  member for  4 years, 5 months 
seen  4 hours ago  
stats  profile views  3,236 
8h

revised 
How do I find coefficients of a product expansion
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10h

revised 
How do I find coefficients of a product expansion
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10h

comment 
How do I find coefficients of a product expansion
I am vaguely aware that there's an answer to this question of the form ``take a logarithm and do symmetric function combinatorics'', but I wasn't able to reconstruct the details. 
10h

asked  How do I find coefficients of a product expansion 
Aug 18 
comment 
A group allowing exactly 7 group topologies
How can there be an infinite group with exactly 2 topologies? Shouldn't there always be at least 3  trivial, discrete, and cofinite? 
Aug 18 
comment 
A group allowing exactly 7 group topologies
@Noah S: A topology on a finite group is the pullback of the discrete topology on the quotient by the closed and normal subgroup given by intersecting of all closed subsets containing the identity. So topologies are the same as normal subgroups; the noninclusivity condition is asking that any two nontrivial normal subgroups intersect only in the identity, so $G$ is the product of any two. If there are at least 3 nontrivial such subgroups, they must all be the same simple group $H$ and $G = H \times H$, and has $2 + Aut(H)$ nontrivial normal subgroups. 
Aug 17 
revised 
FIltrations on a vector bundle on a curve
added 4 characters in body 
Aug 17 
answered  FIltrations on a vector bundle on a curve 
Aug 11 
reviewed  Reject suggested edit on nontrivial theorems with trivial proofs 
Aug 9 
revised 
Building a genus$n$ torus from cubes
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Aug 9 
awarded  Enlightened 
Aug 9 
awarded  Nice Answer 
Aug 9 
revised 
Building a genus$n$ torus from cubes
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Aug 8 
revised 
Building a genus$n$ torus from cubes
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Aug 8 
revised 
Building a genus$n$ torus from cubes
added 414 characters in body 
Aug 8 
revised 
Building a genus$n$ torus from cubes
edited body 
Aug 8 
comment 
Building a genus$n$ torus from cubes
yeah, where an 'edge' is a length 1 interval. I changed it. 
Aug 8 
awarded  Necromancer 
Aug 8 
revised 
Building a genus$n$ torus from cubes
added 2 characters in body 
Aug 8 
awarded  Revival 