bio  website  math.temple.edu/~rivin 

location  USA  
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visits  member for  4 years 
seen  10 hours ago  
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Professor of Mathematics at Temple University.
2d

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Koebe–Andreev–Thurston theorem  where can I find a proof?
Andreev's second paper (on polyhedra of finite volume, but also the Roeder/Hubbard fix to the error in Andreev's paper). 
2d

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Koebe–Andreev–Thurston theorem  where can I find a proof?
Rodin and Sullivan proved that circle packing maps converge to the Riemann mapping, NOT the circle packing theorem. The convergence of Thurston's algorithm was proved by Marden and Rodin, though Thurston's original observation (that circle packing follows from Andre'ev's theorem) is a twoline remark (but does not apply to higher genus). 
2d

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Koebe–Andreev–Thurston theorem  where can I find a proof?
Also, what is Andre'ev, chopped liver? Geez, talk about revisionism... 
2d

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Koebe–Andreev–Thurston theorem  where can I find a proof?
Bobenko and Springborn??? That argument is due to yours truly (annals, 1994), B&S give a dual version, which connects my argument with Colin de Verdiere's. 
Nov 22 
awarded  Popular Question 
Nov 17 
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Reducible polynomials
@FelipeVoloch It works with probability 1 asymptotically in height and degree, but I assume the OP is actually interested in actual polynomials, and has some bounds on height and degree in mind (and the convergence to 1 is not that fast in either metric). 
Nov 17 
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Reducible polynomials
It does not say anywhere that there is no better way (there might, in fact, be), but no one I have ever talked to knows of one (including van Hoeij, who is THE expert). You are welcome to try to come up with one :) 
Nov 17 
answered  Reducible polynomials 
Nov 14 
answered  On a proposition in Hartshorne's paper “Ample vector bundles on curves” 
Nov 14 
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Polytopes with few vertices and few facets
@TimothyChow (2) and (3) is, of course, really only one condition :) 
Nov 14 
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What is the expected dimension of the Zariski closure of the rational points on the moduli space of curves?
@JasonStarr My guess is that the OP has already asked Nick :) 
Nov 7 
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Copositivity under tensor products
What does copositive mean? 
Nov 7 
answered  An infinite product associated with random matrices 
Nov 7 
revised 
Expectation of exp(1/(ax^2)) when x is a standard normal variable and a>0 is a parameter
fixed formula for proper normalization 
Nov 6 
answered  Expectation of exp(1/(ax^2)) when x is a standard normal variable and a>0 is a parameter 
Nov 5 
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Is this infinite series related to some wellknown special functions?
Not from Mathematica (I tried). 
Nov 5 
answered  closed integral formula for a nonzero solution of a homogeneous linear ODE of order 2 
Nov 5 
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Which mapping class group representations come from algebraic geometry?
Re: abelian not being essential  true, but far from easy, see (on arxiv) the recent paper of Larsen, Lubotzky, Malestein, Grunewald. 
Nov 4 
answered  Which mapping class group representations come from algebraic geometry? 
Nov 4 
answered  Examples of compact complex nonKähler manifolds which satisfy $h^{p,q} = h^{q,p}$ 