bio  website  math.temple.edu/~rivin 

location  USA  
age  
visits  member for  3 years, 11 months 
seen  6 mins ago  
stats  profile views  12,874 
Professor of Mathematics at Temple University.
7h

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Parity of primes
What does "parity" mean? The parity of the number of ones in the binary representation? If so, please say it. If not, please say it. 
1d

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Real points of zerodimensional real algebraic varieties
Yes, that is true, but that is only true with certain variance assumptions. 
1d

revised 
Integrals involving trigonometric functions and polynomes
changed the argument. 
1d

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Real points of zerodimensional real algebraic varieties
@joro true, and in fact exactly one (almost surely). 
1d

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Real points of zerodimensional real algebraic varieties
@PerAlexandersson typically, we would want the degrees to go to infinity, and the results we get would be asymptotic in these (all degrees the same might be easiest, but certainly not the only interesting case...) 
1d

asked  Real points of zerodimensional real algebraic varieties 
1d

revised 
Integrals involving trigonometric functions and polynomes
fixed symbol 
1d

answered  Integrals involving trigonometric functions and polynomes 
1d

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Integrals involving trigonometric functions and polynomes
I think some indication of what your thoughts are might help also. 
2d

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How to prove $\lim _{ \delta\rightarrow {0}^{+}}\int_{a}^{b} F_{\delta}(x)dx=0 ? $
I don't disagree with @AnthonyQuas, but a hint: the function is Riemann integrable, so use Riemann sums. 
2d

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The behavior of series involving special subsets of the prime numbers
One might think that Brun's argument generalizes to arbitrary $k.$ 
2d

answered  Tetrahedra with prescribed face angles 
Oct 18 
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Can an odd map be null homotopic?
Is this standard notation, or new? 
Oct 17 
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How is constrained optimization done?
You might want to read a book on the subject. Boyd and Vanderberghe's "convex optimization" leaps to mind (available for free on Boyd's web site). 
Oct 15 
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Computing the Zariski closure of a subgroup of SL(n,Z)
@Venkataramana I did not read the question carefully (two years ago :)) Obviously, constructing the Zariski closure is a much harder question. 
Oct 15 
awarded  Nice Question 
Oct 14 
answered  Computing the Zariski closure of a subgroup of SL(n,Z) 
Oct 13 
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How to evaluate the following integral related to exponential distribution
Are you asking for a closed form or an asymptotic? 
Oct 13 
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Random nonintersecting circles in the plane
For large $n,$ this reduces to a local question, so the distance will be, roughly a function of the area of the region and the number of points. Just google "Poisson point process". 
Oct 12 
answered  MilnorWolf result on growth of solvable groups 