# Goodarz Mehr

Tehran

Iranian National Mathematical Olympiad, Silver Medal, 2010

Iranian National Mathematical Olympiad, Gold Medal, 2011

International Mathematical Olympiad, Bronze Medal, 2012

Studing Mechanical Engineering at Sharif University of Technology

Top Questions

## Solutions to the matrix equation $\mathbf{AB-BA=I}$ over general fields

asked Jan 15 '12 at 3:14

## Showing $\prod\limits_{i<j} \frac{x_i-x_j}{i-j}$ is an integer

asked Feb 3 '12 at 16:19

## 5 moving points in plane, one goes to infinity

asked Sep 11 '12 at 18:02

## a 2 distance set has an upper bound for number of its elements

asked Jan 27 '12 at 13:41

## diophantine equation in positive integers

asked Dec 27 '11 at 9:38

## Identical colored squares in plane

asked Nov 20 '11 at 17:35

## combinatorial geometry: covering a square

asked Nov 20 '11 at 15:59

## Cayley-Hamilton theorem on square matrices

asked Jan 4 '12 at 15:56

## Computing determinant of a matrix with non-zero values on three diagonals

asked Feb 6 '12 at 4:03