bio | website | math.tsukuba.ac.jp/~carnahan |
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location | 筑波市, Japan | |
age | ||
visits | member for | 5 years |
seen | 1 hour ago | |
stats | profile views | 16,473 |
I think this is a neat project.
Oct 26 |
answered | How many isolated roots can a polynomial in $z$ and $\overline{z}$ have? |
Oct 26 |
reviewed | Close Convert constraint to do convex optimization or use Lagrange multiplier method |
Oct 26 |
comment |
The space $W = \{u \in L^2(0,T;V) : u_t \in L^2(0,T:V^*)\}$ without having identified $H$ and $H^*$
Please use the "edit" link under the question text to make it more clear. |
Oct 26 |
reviewed | Close The space $W = \{u \in L^2(0,T;V) : u_t \in L^2(0,T:V^*)\}$ without having identified $H$ and $H^*$ |
Oct 26 |
reviewed | Leave Open Semigroup nilpotents and compostional inversion |
Oct 26 |
reviewed | Leave Open Which groups are LERF? |
Oct 25 |
reviewed | Close Compare time it takes to travel a curve and a line |
Oct 24 |
answered | What is the difference between the moduli space of curves and the moduli space of orbi-curves? |
Oct 23 |
reviewed | Close A question on the Euclidean domain $\mathbb{Z}[\omega]$ |
Oct 23 |
reviewed | Leave Open Is a group uniquely determined by the sets $\{ab,ba\}$ for each pair of elements a and b? |
Oct 23 |
comment |
Second Hardy-Littlewood Conjecture theme
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 |
comment |
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 |
comment |
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 |
comment |
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 homotopy-theoretic localizations. The archimedean branch ran into a picture of a dragon, labeled "$C^*$-algebras?". |
Oct 18 |
comment |
A good book on adeles and ideles
Have you looked at Ramakrishnan-Valenza? |
Oct 18 |
comment |
Is the upper half plane an algebraic stack?
By the way, a semi-rigorous 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 17 |
comment |
Shift-invariant symmetric functions in representation theory?
This appears to be the ring of $S_n$-invariants on the symmetric algebra of the standard $n-1$-dimensional representation. |
Oct 17 |
reviewed | Close Can I find a resolution of singularities that is both smooth and projective? |