bio  website  math.berkeley.edu/~vivek 

location  Berkeley, CA  
age  31  
visits  member for  4 years, 5 months 
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2d

comment 
Different definitions of linkless graphs
yes, those are clearly different definitions. however the distinction is irrelevant for the purposes of that second paper, since flat implies [KKM]linkless implies [RST]linkless implies, as shown in [RST], the existence of some flat embedding. 
Aug 26 
revised 
Twist in identification with singular cohomology
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Aug 25 
revised 
Twist in identification with singular cohomology
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Aug 25 
answered  Twist in identification with singular cohomology 
Aug 22 
revised 
How do I find coefficients of a product expansion
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Aug 22 
revised 
How do I find coefficients of a product expansion
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Aug 22 
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. 
Aug 22 
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
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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
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Aug 8 
revised 
Building a genus$n$ torus from cubes
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