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visits member for 5 years, 7 months
seen 40 mins ago

21h
comment Which domain maximizes the energy of the Lebesgue measure?
Doesn't Steiner symmetrization prove this?
1d
comment Will this be a case of self plagiarism or will it annoy the referee?
As a referee, I would prefer a reference. I would appreciate consistent notation between the two papers, and hopefully some mathematical explanation of why two apparently disjoint papers are not disjoint after all. As I referee, I will also want to know why, if the step is "small", does it take 5 pages.
2d
comment Epsilon-approximations of set systems with finite VC-dimension
You are right, but working with multisets is normally easier in these kinds of problems anyways. Many authors write "set" when they should have written "multiset".
2d
comment Two conjectures about zero inner products and dissociated sets
Comments: 1) $P(A_i=0)$ is $C/\sqrt{n}$ if $v=1$ identically, but if not if $v=0$ say. 2) Do you care about $n/4$ as opposed to $n/1000$? 3) It is easy to get $2^{-n/\log n}$ instead of $2^{-n/4}$ by letting $v$ to be the vector that is all $1$ except that $n$'th position that is $0$. Do you have a better bound?
2d
comment Sum of weighted permutations over natural numbers
The question is too vague to allow a meaningful answer. You would have to share a bit more about "interesting properties" for us to help you. For example, there is the rearrangment inequality. Do you care for it?
2d
reviewed Close Series Decomposition
2d
reviewed Close Projection mappings
May
18
reviewed No Action Needed K-fellow traveler property and automatic structure
May
15
comment Smallest constant so that there are at least $n/\log_2{n}$ primes between $n$ and a constant multiple of $n$
The prime number theorem has a sufficiently good error term to make this question an easy exercise. Voting to close as off-topic for the website.
May
6
awarded  Explainer
May
6
revised Simultaneous approximation by rationals with relatively prime numerators
added 123 characters in body
May
6
answered Simultaneous approximation by rationals with relatively prime numerators
May
6
revised Simultaneous approximation by rationals with relatively prime numerators
Formatting
May
5
awarded  Enlightened
May
5
awarded  Nice Answer
May
4
answered Maximum height of intersection of triangles
Apr
26
reviewed No Action Needed All non-split Cartan subroups of $GL_2(\mathbb{Z}/n\mathbb{Z})$ are conjugate
Apr
26
reviewed Close For a non-convex function f, how to find a function g such that $g\circ f$ is strictly convex?
Apr
24
reviewed Leave Closed Minimum number of real multiplications to multiply two quaternions
Apr
24
reviewed Looks OK Animating a unitary transform