bio  website  math.purdue.edu/~eremenko 

location  United States  
age  60  
visits  member for  2 years, 5 months 
seen  4 hours ago  
stats  profile views  8,398 
Math Professor
2d

awarded  differentialequations 
2d

answered  Sequence of smooth maps converging to the identity 
Jan 23 
answered  Local rotations to world rotations 
Jan 19 
answered  What would undergraduate research consist of? 
Jan 19 
comment 
Does Newtonian capacity increase strictly when mass is spread?
@TKM: I agree with Christian's last message. The measure cannot be supported by A or B because you said that they are both of positive capacity. 
Jan 18 
comment 
Does Newtonian capacity increase strictly when mass is spread?
I did not understand how do you use the Landkof result. Why does there exist a contraction which sends $A$ to $A$ and $B$ to $B+rv$? (I do not think this is true without further restrictions.) And what does your strange sign like $\Pi$ upside down nean? Is this the union? 
Jan 18 
answered  What are Carnot groups? 
Jan 12 
comment 
Analytic diffeomorphisms of the circle from complex domains
MR0902292 Kirillov, A. A. Kähler structure on the Korbits of a group of diffeomorphisms of the circle. 
Jan 12 
answered  Simple Spectrum of Jacobi matrices 
Jan 11 
awarded  Nice Answer 
Jan 6 
awarded  Good Answer 
Jan 5 
comment 
MathScinet reviewing: should I check the proofs?
@Adam Epstein: It is nobody's responsibility:) When you use some published result, it is only YOUR responsibility to check that it is correct. 
Jan 5 
awarded  Nice Answer 
Jan 5 
comment 
Research and exposition: how does writing “basic” books affect your “serious” research work?
Young mathematicians usually do not write basic textbooks, though there are few exceptions. Assuming that you are a young mathematician, I do not understand why are you asking this question. 
Jan 5 
answered  MathScinet reviewing: should I check the proofs? 
Jan 5 
awarded  Good Question 
Jan 2 
comment 
Are there any serious investigations of whether “mathematicians do their best work when they're young”?
I see nothing wrong with this question: it is a legitimate "reference request" on the question which is of interest to many. I vote to reopen. 
Dec 30 
reviewed  Close Set of critical values is compact 
Dec 30 
reviewed  Leave Open Shortest rope to capture a sphere of diameter 1 
Dec 30 
reviewed  Close The functional $L(\varphi)=\int_0^{2\pi}\frac{\sqrt{1\varphi^2(\varphi')^2}}{1\varphi^2}d\theta$ 