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Apr
9
comment Undergraduate ODE textbook following Rota
You sound as though you were surprised to learn that you'll be teaching undergraduate ODEs. If so, you've been badly misled about something.
Apr
9
comment Undergraduate ODE textbook following Rota
My department uses the BDH book. It has its detractors, but it fits Rota's advice pretty well, which is one (or ten?) of the reasons I personally like it.
Apr
9
comment Undergraduate ODE textbook following Rota
@lenticcatachresis en.wikipedia.org/wiki/Word_problem_(mathematics_education)
Feb
4
comment multivariate Gaussian approximation in total variation distance
Incidentally, the OP's question suggests that they might be familiar with arxiv.org/abs/math/0606073, from which you can see that I know perfectly well that Stein's method can be used to derive total variation bounds.
Feb
4
comment multivariate Gaussian approximation in total variation distance
@Guillaume: You seem to have misread what I wrote. What I said is that total variation approximation is simply false without some kind of additional assumptions, so it is equally out of reach for any method. This is the kind of "impossibility result" the OP asked about. On the other had, if you do have appropriate additional assumptions, then Stein's method is often the best way to reach total variation bounds.
Jan
16
awarded  Custodian
Jan
16
reviewed Approve A min-max formula for depth of the origin in a convex set
Jan
6
awarded  Nice Answer
Jan
6
awarded  Good Answer
Dec
1
awarded  Good Question
Oct
22
awarded  Yearling
Sep
16
awarded  Notable Question
Jul
24
revised Do subgaussian variables obey the slightly-stronger-than-Chernoff tail bound?
Fixed inequalities.
Jul
23
answered Do subgaussian variables obey the slightly-stronger-than-Chernoff tail bound?
Jul
20
answered Extending GUE to a measure on operators?
Jul
6
awarded  Good Question
Jun
30
comment Kullback Leibler “variance”: does that divergence have a name?
I haven't seen exactly this quantity considered, but something related is studied here (see in particular the discussion after Theorem 1.1): projecteuclid.org/euclid.aop/1312555807
Jun
30
comment Shared maximum eigenvector
For an appropriate interpretation of the question, at least. The OP said $v$ is "the" eigenvector associated to the maximum eigenvalue of $A$, but if the eigenspace is not 1-dimensional you may need to replace $v$ with another eigenvector.
May
27
comment Higher Moments, what are they good for?
Essentially the same question was asked and answered here: stats.stackexchange.com/questions/2893/…
May
27
comment Describe the desired features of a “Mathematics Colloquium”?
A former department chair of mine used to say that if you asked colloquium speakers to prepare talks appropriate for undergraduates, then there was a chance some of the faculty would understand.