Ivan Meir's user avatar
Ivan Meir's user avatar
Ivan Meir's user avatar
Ivan Meir
  • Member for 13 years, 9 months
  • Last seen this week
  • London
2 votes

Do there exist positive integers $m$, $n$, $p$, $q$ such that $m>1$, $p\neq q$, $p$ and $q$ divide $mn^2 - 1$, and $mn$ divides $p - q$?

2 votes

History of "no positive definite ternary integral quadratic form is universal"?

7 votes
Accepted

Why are exponential sums so bad at solving this very easy problem?

3 votes

A natural $\mathbb Q\times \mathbb P$ subset of $\mathbb R$?

1 vote

How many solutions are there to the equation $x^2 + 3y^2 \equiv 1 \pmod{p}$?

2 votes
Accepted

Convergence of the sum of a family of real-valued functions

2 votes

An inequality on some pairs of orthogonal vectors

0 votes

How to learn a continuous function?

1 vote

ratio between a polygon bounded in another polygon

6 votes
Accepted

Run-away functions

2 votes

On reflection properties of convex regions

7 votes
Accepted

Solving equation of matrix valued functions

3 votes
Accepted

Average value of a fractional part of a function

1 vote

Updating the null space of a matrix

0 votes

Solution for $Xa + X^Tb = c$ where $X^TX = I$?

6 votes

Surprising properties of closed planar curves

29 votes

Every mathematician has only a few tricks

0 votes

Solutions to system of polynomial equations over finite fields

3 votes

Conceptual explanation of geometric mean as a limit of power means

6 votes

Proofs where higher dimension or cardinality actually enabled much simpler proof?

5 votes

What aspects of math olympiads do you find still useful in your math research?

28 votes

Conway's lesser-known results

2 votes

Show that $(\sum_{k=1}^{n}x_{k}\cos{k})^2+(\sum_{k=1}^{n}x_{k}\sin{k})^2\le (2+\frac{n}{4})\sum_{k=1}^{n}x^2_{k}$

7 votes
Accepted

Linear combination of sine and cosine

7 votes

Why is the Fourier transform so ubiquitous?

2 votes

prime dividing no term in a sequence

5 votes

Strange formula for area of a convex polygon

1 vote
Accepted

Generate a two-variable polynomial from its "roots

12 votes
Accepted

Does midpoint-convex imply rationally convex?

5 votes
Accepted

Point generation in polygon