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bio website maths.leeds.ac.uk/~mdaws
location Leeds, UK
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visits member for 5 years, 6 months
seen Mar 30 at 15:05

Mar
19
awarded  Nice Answer
Feb
26
comment Ultraweak topology on B(X): Is the map X\otimes X* -> B(X)* isometric?
@YemonChoi: I would look at $B(X,X^{**})$ instead of $B(X^*)$, then we're asking if the ball of $B(X,X)$ is weak$^*$-dense in the ball of $B(X,X^{**})$. The PLR shows that this is true for finite-rank operators; and the metric approximation property allows you to reduce from all operators to just the finite-rank ones. If $X$ is reflexive, then there is nothing to prove. What I don't see is how to combine these two rather different viewpoints...!
Jan
13
awarded  Popular Question
Oct
15
awarded  Yearling
Sep
30
awarded  Explainer
Aug
13
awarded  Nice Question
Jul
7
accepted “Minimal” group C*-algebra?
Jul
3
revised Arveson's extension for normal completely positive maps
Showing that the final part is not correct.
Jul
2
answered Arveson's extension for normal completely positive maps
Jul
2
awarded  Inquisitive
Jul
2
awarded  Curious
Jun
24
awarded  Nice Question
Jun
24
asked “Minimal” group C*-algebra?
Jun
12
answered Continuity of the product map
Apr
15
revised What is “tilting” in the context of large deviations?
Removed backticks which were messing with the formatting
Mar
29
awarded  Popular Question
Mar
6
comment Can we expect $\left\||f|^{2}f-|g|^{2}g\right\|\leq C ||f-g||$ in the Banach algebra $A(\mathbb T)$ ?
Although, I must say that the whole $M=2\|f_0\|$ thing is very mysterious...
Mar
6
comment Can we expect $\left\||f|^{2}f-|g|^{2}g\right\|\leq C ||f-g||$ in the Banach algebra $A(\mathbb T)$ ?
But that's not what the question asked: $f_0$ is fixed, this gives $M$ and then the OP specifically asks only for $f,g\in B_M$. If it was meant to be uniform, then why both with the $B_M$ condition?
Mar
6
answered Can we expect $\left\||f|^{2}f-|g|^{2}g\right\|\leq C ||f-g||$ in the Banach algebra $A(\mathbb T)$ ?
Mar
5
comment Does anybody know if the Fourier algebra of SL(3,Z) has an approximate identity?
What do you mean by "somewhat technical partial converse"? Just Thm 1.11, namely some sort of tensoring against a group with a sufficient rich set of representations?