bio  website  math.wustl.edu/~nweaver 

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2d

comment 
adjoint of this closed (?) operator
I think this question belongs on math.stackexchange. 
Jan 10 
comment 
A set intersecting the graph of any continuous function in a finite set
@LisaK: the generalization is this. If $X$ contains such a configuration, then identify it with ${\bf N}$ and define $f$ as in my other answer. Let $f$ be zero off the configuration. A cluster point of a set $A$ is a point $x$ every neighborhood of which has infinite intersection with $A$. 
Jan 3 
comment 
The monotone closure of a $C^*$algebra
Nice answer. I didn't know that problem was open. 
Jan 2 
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Are there any serious investigations of whether “mathematicians do their best work when they're young”?
As I read this article, I kept noticing how free it was of gross misconceptions about mathematics. Of course, it turns out that the author is a mathematician ... 
Dec 31 
revised 
Isomorphism of Hilbert modules
added 116 characters in body 
Dec 31 
comment 
Isomorphism of Hilbert modules
@Todd  the subtlety is that we don't know $\langle x,x\rangle = \langle Tx, Tx\rangle$  then Alex's answer would work  we only know $\\langle x,x\rangle\_B = \\langle Tx, Tx\rangle\_B$. The "inner product" on a Hilbert module takes values in a C*algebra, but the norm is still a scalar. 
Dec 30 
answered  Isomorphism of Hilbert modules 
Dec 29 
reviewed  Approve hypercube tag wiki excerpt 
Dec 15 
reviewed  Approve Models of intuitionistic linear logic that reflect the resource interpretation 
Dec 9 
comment 
applications of C$^*$algebras in the field of PDEs
I disagree with the decision to close this question. I'm not aware of a large body of applications of C*algebra to PDEs. Could any of those who voted to close suggest other examples besides mine? 
Dec 8 
awarded  Enlightened 
Dec 8 
awarded  Nice Answer 
Dec 8 
reviewed  Edit Selfdual automorphic forms on $GL(4)$ 
Dec 8 
revised 
Selfdual automorphic forms on $GL(4)$
Corrections 
Dec 6 
reviewed  Approve applications of C$^*$algebras in the field of PDEs 
Dec 6 
answered  applications of C$^*$algebras in the field of PDEs 
Dec 1 
comment 
Extend product sigmaalgebra to crossconstant sets
You are welcome! 
Dec 1 
comment 
Extend product sigmaalgebra to crossconstant sets
I refer to a theorem of Banach and Kuratowski. 
Dec 1 
comment 
Extend product sigmaalgebra to crossconstant sets
@Jochen: no, the axiom of choice excludes a translationinvariant measure on [0,1]. 
Dec 1 
comment 
Extend product sigmaalgebra to crossconstant sets
(Minor typo in condition 2: surely you mean $A \subseteq \Omega$.) 