Ivan now prefers matrices
Source: 2023 IMC P6
August 3, 2023
combinatoricsmatrixIMClinear algebraIMC 2023
Problem Statement
Ivan writes the matrix on the board. Then he performs the following operation on the matrix several times:1. he chooses a row or column of the matrix, and2. he multiplies or divides the chosen row or column entry-wise by the other row or column, respectively.Can Ivan end up with the matrix after finitely many steps?