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Peter

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Top Questions
18 votes

What is known about the “unitary group” of a rigged Hilbert space?

fa.functional-analysis lie-groups infinite-dimensional-manifolds nuclear-spaces rigged-hilbert-spaces asked Jul 22 '20 at 10:46
mathoverflow.net

16 votes

Do you have my spare key?

keys-and-locks asked Mar 23 '18 at 12:37
puzzling.stackexchange.com

11 votes

A macro that draws a half-disk for use in mathmode

math-mode subscripts asked Nov 20 '18 at 14:39
tex.stackexchange.com

8 votes

Why do we apply functions the “wrong way around”, i.e. why do we write $f(x)$ instead of $(x)f$?

notation math-history asked Mar 28 '19 at 21:34
math.stackexchange.com

7 votes

Diffeological isomorphisms between irrational tori.

differential-geometry smooth-manifolds noncommutative-geometry diffeomorphism asked May 18 '17 at 16:04
math.stackexchange.com

7 votes

Is there an adaptation of the theory of standard forms and Tomita-Takesaki theory to the $\mathbb{Z}_{2}$-graded case?

reference-request oa.operator-algebras von-neumann-algebras asked Aug 17 '18 at 11:30
mathoverflow.net

6 votes

Given a sequence of spaces $X \subset Y \subset Z$ with $X$ dense in $Z$, is $X$ dense in $Y$?

general-topology functional-analysis metric-spaces hilbert-spaces complete-spaces asked Jun 27 '19 at 12:25
math.stackexchange.com


Top Answers
13
Why are skew-symmetric matrices of interest?
math.stackexchange.com

9
Let A and B are $2 \times 2$ matrices, where AB = BA, show that $\text{A B}^2 = \text{B}^2 \text{A}$
math.stackexchange.com

8
What am I being paid for? (postdoc)
academia.stackexchange.com

6
How to find if this function is always zero?
math.stackexchange.com

5
If a continuous function is not-strictly-increasing, is there an interval on which it is weakly decreasing?
math.stackexchange.com

5
Easy and elementary proof that roots of a polynomial cannot contain a ball
math.stackexchange.com


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