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location Lancaster, United Kingdom
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visits member for 5 years
seen 18 mins ago

Just when I thought I was out, they pull me back in


13h
reviewed Leave Open Minimal normal subgroups of a finite group
13h
comment Exactly 2 Girls - Conditional Probability
This question is better suited to math.stackexchange.com
14h
comment Consecutive Integer Squared Square
Moreover, the question is about squares which can be partitioned into square pieces of different sizes, so your purely arithmetic approach cannot suffice on its own.
14h
comment Consecutive Integer Squared Square
Your second equation need not have integer solutions, e.g. for t=3 the LHS is not divisible by 3.
14h
comment Integral of (2-x)/(x-1) Really stumped
Unfortunately MathOverflow is not for this kind of question: see mathoverflow.net/help/on-topic for an explanation why
14h
reviewed Leave Open complete compact open topology
23h
revised Clebsch Gordan coefficients of compact quantum groups
fixed typo in title and added OA tag
1d
reviewed Leave Open Ground State Degeneracy of 2+1D U(1) Chern Simons Theory?
1d
comment A doubt on Balaji Meyn's ergodic theorem paper
@PeterSamuelson It sounds very odd to me too, but is apparently relatively common for e.g. those learning English on the Indian subcontinent, and some other groups: english.stackexchange.com/questions/13913/…
1d
reviewed Leave Open Why care about Fourier-Mukai partners?
1d
comment Are convolution algebras ever “topologically noetherian”?
When you say "closed", are you assuming your convolution algebra is complete in an appropriate topology?
1d
comment A question on banach or $C^{*}$ algebra
This question should be closed because it has not been thought through properly
1d
comment A question on banach or $C^{*}$ algebra
Also, your condition is vacuous for simple C*-algebras since they have no primitive ideals.
1d
comment A question on banach or $C^{*}$ algebra
Also, Banach and Cstar algebras are not the appropriate generalization for results about smooth functions. C^\infty[0,1] is a Frechet algebra not a Banach algebra. I think you should think more carefully about your questions rather than snatching at the first vague hope of an analogy - this is not what noncommutative geometry should be about
1d
comment A question on banach or $C^{*}$ algebra
Your question regarding B is rendered trivial by the Singer-Wermer theorem for bounded derivations.
1d
comment CB-norm of mappings from a matrix space
Wrote a stupidly wrong answer before realizing mistake. Sorry
2d
comment A doubt on Balaji Meyn's ergodic theorem paper
@PeterSamuelson there have been previous discussions, possibly on the old "tea.MO", of why various users use "doubt" as a synonym of "question"
2d
comment A basic doubt on the quantity $\ln E[e^X]$
Since I am not on MSE I'll just comment that the current answer there uses Hoeffding's inequality and several paragraphs of work... and IIRC Hoeffding's inequality is proved using Jensen's inequality. Sigh
2d
comment What recent programmes to alter highly-entrenched mathematical terminology have succeeded, and under what conditions do they tend to succeed or fail?
Possibly borderline: Dunford seems to use bicompact in some 1940ish articles but I don't recall which word is used in Dunford-Schwartz
2d
reviewed Close RANSAC Multivariate Regression