bio  website  math.purdue.edu/~eremenko 

location  United States  
age  61  
visits  member for  3 years 
seen  2 hours ago  
stats  profile views  9,364 
Math Professor
23h

awarded  Yearling 
Jul 30 
comment 
A question on $J(f)$ and $J(f')$
same opinion. In fact all 4 sets must have nonempty intersection. 
Jul 30 
comment 
A question on $J(f)$ and $J(f')$
I do not think anyone asked this question before, and I conjecture that $J(f)$ and $J(f')$ always have common points. 
Jul 30 
comment 
A question on $J(f)$ and $J(f')$
Probably it does not. But why would one care about such a question? 
Jul 29 
comment 
Distributing points evenly on a sphere
This problem is unsolved for large number of points. 
Jul 28 
revised 
Distribution of Poles of solutions to the first Painleve equation
edited body 
Jul 27 
answered  Distribution of Poles of solutions to the first Painleve equation 
Jul 21 
comment 
Lipschitzlike behaviour of quartic polynomials
On my opinion, his question does not belong to this site. 
Jul 21 
comment 
Lipschitzlike behaviour of quartic polynomials
What Taylor series?? Your question is about quadratic polynomial! 
Jul 21 
comment 
Lipschitzlike behaviour of quartic polynomials
If the derivative of $q$ at its roots is large, then perturbation by a small linear factor changes the roots a little. Just sketch the graphs of your polynomial and the perturbed one. 
Jul 19 
comment 
Natural topologies for the space of rational functions
The difficulty is that in this topology $z/(z1/n)$ has no limit when $n\to\infty$. 
Jul 19 
revised 
Derivative of Bandlimited functions
added 9 characters in body 
Jul 19 
comment 
Derivative of Bandlimited functions
@Ron, Thanks, I corrected. 
Jul 18 
revised 
Derivative of Bandlimited functions
added 35 characters in body 
Jul 18 
comment 
Derivative of Bandlimited functions
The inequality comes from the Cauchy inequality. Equality holds when the functions are equal. So take $g(t)=t$. 
Jul 18 
answered  Reference request: using integral equations to study asymptotics of ODEs 
Jul 18 
comment 
From Planar Graphs To Tangent Circles
I am afraid that in the KAT theorem, the graph is not arbitrary: it is a triangulation. 
Jul 18 
answered  Derivative of Bandlimited functions 
Jul 18 
revised 
Derivative of Bandlimited functions
added 147 characters in body 
Jul 16 
revised 
Growth of the size of iterated polynomials
added 814 characters in body 