bio  website  people.math.osu.edu/edgar.2 

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23h

revised 
Hausdorff measure of the graph
added 108 characters in body 
23h

answered  Hausdorff measure of the graph 
Mar 24 
comment 
Dual space of $l^p(\mathbb{Z},X)$
A table of duals of common spaces is found in Dunford & Schwartz, volume 1. 
Mar 23 
answered  Is there any simpler form of this function 
Mar 23 
comment 
What is the value of the infinite product: $(1+ \frac{1}{1^1}) (1+ \frac{1}{2^2}) (1+ \frac{1}{3^3}) \cdots $?
Value 2.60361190459951423330221282635 is not known to isc.carma.newcastle.edu.au 
Mar 21 
comment 
Is there a natural bijection from $\mathbb{N}$ to $\mathbb{Q}$?
It maps only to $\mathbb Q^+$ ? Is that your objection? 
Mar 14 
comment 
Is this apushout diagram
Reading your title made me wonder why Apu is shouting. 
Mar 10 
comment 
Generating function for reciprocals of Stirling numbers?
No, in general there is no reasonable way to find the generating function of the reciprocals of a sequence, knowing only the generating function of the sequence. 
Mar 3 
comment 
Does ZF prove that topological groups are completely regular?
Would it be interesting to come up with a model of ZF and a topological group there that is not completely regular. 
Feb 26 
comment 
Who coined “mob” and “clan” and why these words?
"Group", "family", "collection" have already been used. Bourbaki used tribu ("tribe"), but that did not catch on outside Frenchspeakers. So Alexander just used some other words for organization. 
Feb 25 
comment 
Selfdual normed spaces which are not Hilbert spaces
The Denis unit ball is a square, but the unit ball for any twodimensional Hilbert space is an ellipse. So the Denis space is not isometric to a Hilbert space. (It is, of course, linearly homeomorphic to a Hilbert space.) 
Feb 24 
awarded  Popular Question 
Feb 20 
answered  What is $\sum_{i=0}^{n}\binom{n}{i}^3$? 
Feb 20 
awarded  Necromancer 
Feb 20 
answered  What is a Kelley ring? 
Feb 18 
revised 
Maximal ideals of the algebra of measurable functions
added 24 characters in body 
Feb 10 
comment 
Are $L^\infty(\Bbb R)$ and $L^2(\Bbb R)$ homeomorphic?
We need answers, since comments are likely to go away in the future. 
Feb 10 
comment 
Are $L^\infty(\Bbb R)$ and $L^2(\Bbb R)$ homeomorphic?
Maybe check your explicit homeomorphism $L^p(\Bbb R) \to L^q(\Bbb R)$ more carefully. 
Feb 8 
comment 
Nonreflexive Banach space s.t. X,X*,X**,… are separable
Yes, James space has $X^{**}/X$ of dimension $1$. For example en.wikipedia.org/wiki/James%27_space Also mathoverflow.net/a/43987/454 
Feb 6 
comment 
Is it possible to get an equation with two exponentials and a bessel function in closed form?
Maple fails to find closed form in case $a=b=1,n=2$. It does $n=1$. 