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bio website math.temple.edu/~rivin
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visits member for 3 years, 11 months
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Professor of Mathematics at Temple University.


7h
comment 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
comment Real points of zero-dimensional 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
comment Real points of zero-dimensional real algebraic varieties
@joro true, and in fact exactly one (almost surely).
1d
comment Real points of zero-dimensional 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 zero-dimensional real algebraic varieties
1d
revised Integrals involving trigonometric functions and polynomes
fixed symbol
1d
answered Integrals involving trigonometric functions and polynomes
1d
comment Integrals involving trigonometric functions and polynomes
I think some indication of what your thoughts are might help also.
2d
comment 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
comment 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
comment Can an odd map be null homotopic?
Is this standard notation, or new?
Oct
17
comment 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
comment 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
comment How to evaluate the following integral related to exponential distribution
Are you asking for a closed form or an asymptotic?
Oct
13
comment Random non-intersecting 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 Milnor-Wolf result on growth of solvable groups