bio  website  

location  Lancaster, United Kingdom  
age  
visits  member for  5 years, 9 months 
seen  3 hours ago  
stats  profile views  20,456 
"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 treadmill is work, while rolling tenpins or climbing Mont Blanc is only amusement."
 from The Adventures of Tom Sawyer by Mark Twain 
11h

comment 
Computing Hochschild Cohomology
For example, this is a better version of your question: mathoverflow.net/questions/212810/… 
13h

comment 
examples of completely positive order zero maps to demonstrate a theorem
"More analytical" is a highly subjective term, and in my view illdefined. I am a professional functional analyst and I don't see anything "uninteresting" or "unanalytic" 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^eprojective resolution looks like 
2d

comment 
Are most random variables trivially subgaussian?
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 selfadjoint 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 
2d

reviewed  Leave Open The spring Markov chain on $\mathbb{N}$ 
2d

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 (DefantFloret, 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 nonHilbertian 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 offtopic 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. 