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"If he had been a great and wise philosopher... he would now have comprehended that Work consists of whatever a body is obliged to do, and that Play consists of whatever a body is not obliged to do. And this would help him to understand why constructing artificial flowers or performing on a tread-mill is work, while rolling ten-pins or climbing Mont Blanc is only amusement."

-- from The Adventures of Tom Sawyer by Mark Twain --


23h
comment Computing Hochschild Cohomology
For example, this is a better version of your question: mathoverflow.net/questions/212810/…
1d
comment examples of completely positive order zero maps to demonstrate a theorem
"More analytical" is a highly subjective term, and in my view ill-defined. I am a professional functional analyst and I don't see anything "uninteresting" or "un-analytic" about the examples you give
1d
comment Computing Hochschild Cohomology
I think this is far too vague unless you specify the particular properties of the particular A that you are working with. You don't tell us what you A^e-projective resolution looks like
2d
comment Are most random variables trivially sub-gaussian?
Doesn't the Poisson distribution count as arising in nature?
2d
comment A relative property gamma and $L(\mathbb F_2)$
Hi Chris. It probably doesn't make any difference, but is M supposed to be self-adjoint as well?
2d
comment Can somone explain a global cascade condition in plain english?
Hello John. Your question might be more appropriate on math.stackexchange.com or stats.stackexchange.com -- in any case, your chances of getting a helpful answer may be improved if you point to the part of the Wikipedia article that is unclear or incomplete
Jul
30
reviewed Leave Open The spring Markov chain on $\mathbb{N}$
Jul
30
reviewed Leave Open Set of smooth curves on the Hilbert scheme is open. H
Jul
27
comment Which classes of functions are “convolution ideals”?
@LutzMattner Sorry, in the above it should be $f*h$, not $h*f$. The idea is that $h$ is an average of translations, but right translation is bad for $\lambda$, so convolving with $h$ on the right can cause "problems to pile up"
Jul
26
comment Hahn Banach type extension of a Lipschitz map
I suggest that you "unaccept" the answer below, otherwise people will think that your question has been fully answered and move on without looking
Jul
26
reviewed Reopen Hahn Banach type extension of a Lipschitz map
Jul
24
reviewed Leave Open How to calculate $det(X^TX)$ efficiently, update one column of X each time
Jul
24
comment The Tensor product of algebra group
@Transcendental Looking in a book on tensor products of Banach spaces (Defant-Floret, or the introductory book of Ryan) should answer your questions :)
Jul
24
comment The Tensor product of algebra group
@Corbennick why do you claim that the more appropriate object to consider is the $C^*$-algebra of $G$? Are bounded representations on non-Hilbertian spaces not worth considering, then?
Jul
24
comment The Tensor product of algebra group
Are you saying that the canonical image of $L^1(G,\mu)\hat{\otimes}_\pi L^1(G,\mu)$ in $L^1(G\times G,\mu\times\mu)$ may be a proper subspace if $G$ is not $\sigma$-finite? I thought this worked for all locally compact groups, not just the $\sigma$-finite ones.
Jul
23
revised A problem in functional calculus
deleted 57 characters in body
Jul
23
comment A problem in functional calculus
@MannyReyes Thanks - you're quite right. I will fix this.
Jul
23
reviewed Leave Open “Friedrichs extension Laplacian” vs “Weak Laplacian” and fractional powers
Jul
22
comment Analytic Number Theory without Pigeonhole Principle
I'm voting to close this question as off-topic because I think it is based on a false premise
Jul
22
comment Analytic Number Theory without Pigeonhole Principle
I agree with @AndyPutman and dispute the claim made in the 2nd paragraph of this question, which seems to me to be based on (understandable) inexperience.