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Buzz
  • Member for 4 years
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revised
Integrability of Schroedinger's equation
fixed typos
suggested
Approve
Integrability of Schroedinger's equation
revised
Is $A^2 + (A^2)^t$ Positive Semidefinite?
fixed latex... but should probably be migrated anyway...
suggested
Approve
Is $A^2 + (A^2)^t$ Positive Semidefinite?
revised
Regularity of solution to heat equation
fixed typos
suggested
Approve
Regularity of solution to heat equation
reviewed
Looks OK
Weaker condition for the excision axiom
reviewed
Looks OK
Real Bott periodicity in style of Harris’s proof of complex Bott periodicity
comment
Question on Artin's Gamma function on $\operatorname{SO}(2,0)(\mathbb R)$
I feel stupid, because I thought $SO(2,0)(\mathbf{R})$ was just $U(1)$.
reviewed
Looks OK
Using three-valued logic for set theory with singletons and equality
revised
What can be said about the cube-free part of $x^3 -3xy^2 +y^3$?
Latex needed
comment
$L^\infty$ bound of $x^m \psi_n(x)$ where $\psi_n$ is a Hermite function and $m,n \in \mathbb{N}$ - extension from Cramer's inequality
It seems like there should a reasonable bound for each $m$ and $n$, coming from the expansion $x^{m}\psi_{n}(x)=\sum_{j}c_{j}\psi_{n+m-j}(x)$.
suggested
Approve
What can be said about the cube-free part of $x^3 -3xy^2 +y^3$?
reviewed
Looks OK
Szemerédi–Trotter type theorem in finite field
awarded
 Good Answer
awarded
 Nice Answer
revised
Is it possible to "get" quaternions without specifically postulating them?
added 1 character in body
answered
Is it possible to "get" quaternions without specifically postulating them?
comment
"Next steps" after TQFT?
The holy grail of TQFT would be a prescription for the duality that interchanges the operator quantum numbers and topological quantum numbers of an arbitrary QFT. More prosaically, there is the sub-problem of finding dualities between classes of perturbative intractable QFTs and (inherently nonperturbative) TQFTs.
comment
First Dirichlet eigenvalue of the harmonic oscillator on a bounded interval $(-a,a)$?
What makes you think $H$ has eigenfunctions with compact support? Naively it looks like any functions with compact support are square integrable on $\mathbb{R}$, and all the square integrable eigenfunctions of $H$ are known. They are just the usual harmonic oscillator wave functions, none of which has compact support.
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