bio  website  math.purdue.edu/~eremenko 

location  United States  
age  61  
visits  member for  2 years, 11 months 
seen  52 mins ago  
stats  profile views  9,234 
Math Professor
21h

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Gamma Functions
Where is the "integral equation"? 
Jul 2 
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Getting back into advanced mathematics
There are no special books, you should use common books. A professional mathematician in the area of your intended graduate study may suggest a specific set of books. 
Jul 2 
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Getting back into advanced mathematics
"Coming back to mathematics" as you describe it is very rare, but possible (I know some successful examples). Because of rarity, there are no special books for these people. In all cases I know, personal contacts with mathematicians were used to return to research. 
Jul 1 
answered  criterion for a differential of the third kind to be a logarithmic derivative of a function 
Jun 30 
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Convex polyhedron and its Gaußcurvature
You do not need Gauss Bonnet to prove the evident fact that sum of angles around a vertex of a convex polytope is less than $2\pi$. 
Jun 28 
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Does the proof of Picard's theorem become simpler by increasing the number of points that are not attained?
This is sometimes called the KobayashiZaidenerg Conjecture, based on the paper of Zaidenberg MR0904640. 
Jun 27 
awarded  Nice Answer 
Jun 27 
answered  Does the proof of Picard's theorem become simpler by increasing the number of points that are not attained? 
Jun 25 
reviewed  Leave Open Are spherical harmonics uniformly bounded? 
Jun 20 
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Positivity of logarithmic energy of certain measures
For Newtonian potential it is simpler. What you wrote is true for every signed measure, no need to require compact support. The reference is the same book, or any other book on potential theory. 
Jun 17 
awarded  Popular Question 
Jun 14 
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Given 2 bounded power series, whether one can be written as a compound power series of the other one?
What's a "bounded polynomial"? 
Jun 12 
awarded  Necromancer 
Jun 11 
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The unpublished papers in reference to the published papers
@ketil Tveiten: Big or small, I feel responsible for what I write, so if I cite something incorrect, or cite it incorrectly, this is my fault. So I try at least to fully understand everything I cite. Including the proofs, of course. 
Jun 10 
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Separable coordinate systems for the Laplace and Helmholtz equations?
Here is one reference later than 1960s: MR1220799 Miller, W., Jr. Rubel, Lee A. Functional separation of variables for Laplace equations in two dimensions, J. Phys. A 26 (1993), no. 8, 1901–1913. 
Jun 9 
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The unpublished papers in reference to the published papers
@cody: Yes, I suppose so. Of course I may forget something but I believe at the time when I cited I knew the proof of what I cited. 
Jun 9 
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What is $\infty^6$?
@MikeShulman: Next time I will be in a library I will look for an appropriate book. 
Jun 8 
awarded  Enlightened 
Jun 8 
awarded  Nice Answer 
Jun 8 
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What is $\infty^6$?
Such questions are usually hard to answer, and I supposed nobody (rigorously) defined it, the notation was intuitively clear. Who used it first? is difficult to answer, and I conjecture that some projective geometer in early 19 century. 