bio  website  math.purdue.edu/~eremenko 

location  United States  
age  60  
visits  member for  2 years, 2 months 
seen  4 hours ago  
stats  profile views  7,811 
Math Professor
11h

answered  On the existence of compactly supported functions whose its Fourier transform satisfies a given condition 
1d

comment 
Teaching the fundamental group via everyday examples
@Sam Nead: Thanks! I downloaded Demaine. What is "Quantum"? Is this the English translation of the Russian Kvant journal? Or something else? MSN does not list the journal with such name. 
2d

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Real points of zerodimensional real algebraic varieties
Yes, with different assumptions the result is different. As you can see from the one polynomial in one variable case. 
2d

answered  Real points of zerodimensional real algebraic varieties 
2d

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Real points of zerodimensional real algebraic varieties
I believe it is $\sqrt{d}$, where $d$ is the product of degrees = number of complex solutions, but I do not remember the reference in higher dimension. 
2d

revised 
Teaching the fundamental group via everyday examples
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2d

revised 
Teaching the fundamental group via everyday examples
added 204 characters in body 
2d

revised 
Teaching the fundamental group via everyday examples
added 204 characters in body 
2d

answered  Teaching the fundamental group via everyday examples 
Oct 18 
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Inequality for an integral involving $ \exp $, $ \sin $ and $ \cos $
@Christian Rempling: integral of $x\sin(2\pi x)$ over this range will depend on $k$. And the desired estimate does not depend on $k$. 
Oct 18 
revised 
Inequality for an integral involving $ \exp $, $ \sin $ and $ \cos $
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Oct 18 
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Inequality for an integral involving $ \exp $, $ \sin $ and $ \cos $
What range of $t$ are you interested in? 
Oct 18 
answered  Inequality for an integral involving $ \exp $, $ \sin $ and $ \cos $ 
Oct 17 
comment 
Hill's discriminant and spectral properties of Schrödinger operator
They do not claim that they arguments constitute a proof of theorem 1: instead they refer to [6,16]. 
Oct 16 
comment 
Analytic extension of the exterior Newtonian potential into the domain
The boundary of these domains is analytic. Look in the literature I recommended. 
Oct 16 
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Analytic extension of the exterior Newtonian potential into the domain
Can someone explain her reasons for closing this question?? 
Oct 16 
revised 
Analytic extension of the exterior Newtonian potential into the domain
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Oct 16 
answered  Analytic extension of the exterior Newtonian potential into the domain 
Oct 13 
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Is this series well known?
@Dirk: Why almost? Is $(n^2)!$ "almost" $n^2$? 
Oct 13 
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Is this series well known?
@Brendan McKey: $n$th term becomes the biggest when $t\sim n^2$. 