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Prime numbers, diophantine equations, diophantine approximations, analytic or algebraic number theory, arithmetic geometry, Galois theory, transcendental number theory, continued fractions

-4 votes
1 answer
605 views

Can we arrange {1,...,9} in 3×3 grid so the set of products of rows equals the set of produc... [closed]

I find a interesting question of Prmo mock and Promys 2020 For which $n\in\mathbb{N}$ is it possible to arrange $\{1,…,n^2\}$ in an $n\times n$ grid so that the set of products of columns equals the s …