Nick S's user avatar
Nick S's user avatar
Nick S's user avatar
Nick S
  • Member for 13 years, 3 months
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19 votes

Cool problems to impress students with group theory

16 votes
Accepted

Decidability of tiling R^2

13 votes

Quasicrystals and the Riemann Hypothesis

13 votes
Accepted

Every function on reals a sum of two surjective real functions?

11 votes

Is $\arcsin(1/4) / \pi$ irrational?

9 votes
Accepted

Why is choice needed in Ellis' Lemma?

7 votes

(non-)existence of the aperiodic monotile

6 votes

Generalizing a problem to make it easier

6 votes

Locally compact abelian groups

6 votes
Accepted

A conjecture concerning symmetric convex sets

5 votes

Zeroes of entire function on $\mathbb C^n$

5 votes

For a finite set A of positive reals, prove that the set A + A - A contains at least as many positive as negative elements

4 votes

Question about functions $f: \mathbb{Z}^+ \to \mathbb{Z}^+$ such that $x$ is prime whenever $f(x)$ is prime

4 votes

What are Penrose Tilings, and how do they relate to Quasicrystals?

3 votes

Aperiodic tiling of compact space by small number of basic tiles

3 votes

Crystal structure, lattice, Graph and coloring

3 votes
Accepted

Positive type function on open subgroup

3 votes
Accepted

Elementary proof of cannonball problem: why can't $n$ be a multiple of $3$?

3 votes

Tiling the plane with quadrilaterals that are mutually non-congruent and affine equivalent

2 votes

$a^2+b^2$ is the product of two numbers one the reverse of the other

2 votes

Reference request: Cut-and-project method gives rise to a fiber bundle over the torus

2 votes

Fourier transform of a Radon measure

2 votes

Most elementary proof showing that exponential growth wins against polynomial growth

2 votes

Sum of part of consecutive terms of expansion of (x+y)^n

2 votes
Accepted

Poisson Summation Formulas for Cut and Project Quasicrystals

2 votes
Accepted

On $B^1$ and $B^2$ almost-periodic functions

2 votes
Accepted

Is any finite collection of points contained in a cut and project set with $\mathbb{R}^d$ as internal space?

1 vote

Quadratic residues and nonresidues of arbitrary patterns

1 vote
Accepted

How to find the almost period of an exponential polynomial

1 vote

How many winning configurations can you have in a nxn Tic-Tac-Toe game where players win if a they get n/2 in either a row or column, consecutively.