bio  website  math.tsukuba.ac.jp/~carnahan 

location  筑波市, Japan  
age  
visits  member for  5 years 
seen  6 hours ago  
stats  profile views  16,447 
I think this is a neat project.
13h

answered  What is the difference between the moduli space of curves and the moduli space of orbicurves? 
1d

reviewed  Close A question on the Euclidean domain $\mathbb{Z}[\omega]$ 
1d

reviewed  Leave Open Is a group uniquely determined by the sets $\{ab,ba\}$ for each pair of elements a and b? 
1d

reviewed  Close Is the configuration space of infinite sphere contractible? 
1d

comment 
Conjecture Reference Request
Sure. Bertrand's postulate is the case $f(x,y) = 2$ if $x > 2y$ and zero otherwise. 
Oct 21 
reviewed  Approve suggested edit on Estimation of growth rate of spectral radius 
Oct 19 
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an question about number theory
I suspect the first factor in the denominator is $q^i  1$ rather than $q^{i1}$. 
Oct 19 
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Where can I find the classification of groups of order 8p?
GAP has big enough tables that you should be able to see the general pattern. 
Oct 19 
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Is the kissing number in $n$ dimensions always divisible by $n$? And what is the base of exponential growth of the kissing number?
1st question: Probably not, but we don't have a proof. 
Oct 19 
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How to extend index theorem to infinite dimensional manifolds?
If you want something to regularize, you need more structure. For example, Witten's work relating the Dirac operator on loop space to modular forms uses the circle action in an essential way. 
Oct 19 
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What is an infinite prime in algebraic topology?
I saw a talk by Morava in 2009, where he displayed a picture of the "Berkovich spectrum of the sphere spectrum". All of the finite prime branches had extended bits corresponding to homotopytheoretic localizations. The archimedean branch ran into a picture of a dragon, labeled "$C^*$algebras?". 
Oct 19 
reviewed  Close Bender's decomposition with overlapping y variables 
Oct 18 
comment 
A good book on adeles and ideles
Have you looked at RamakrishnanValenza? 
Oct 18 
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Is the upper half plane an algebraic stack?
By the way, a semirigorous source is Proposition 2.2 in Deligne's Formes modulaires et représentations $\ell$adiques (Séminaire Bourbaki, 21 1968/69, no. 355). If you can find an unburned copy of Conrad's book on the Ramanujan conjecture, that has a rigorous development (which disagrees with Deligne by a sign). 
Oct 18 
reviewed  Leave Open Tangent space describes the manifold's first order characteristic. Is there something like tangent space describes higher order characteristic? 
Oct 18 
reviewed  Close triangular inequality 
Oct 17 
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Shiftinvariant symmetric functions in representation theory?
This appears to be the ring of $S_n$invariants on the symmetric algebra of the standard $n1$dimensional representation. 
Oct 17 
reviewed  Close Can I find a resolution of singularities that is both smooth and projective? 
Oct 17 
reviewed  Close Numerical method of lines for solving PDEs 
Oct 17 
reviewed  Close TracyWidom distribution  Phase transitions  catastrophe/chaos  'surfacefit'/'curvefit' software 