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

11 votes
3 answers
589 views

Non-singular matrix with restricted entries

Given a set $S$ of integers with $1 \not\in S$, let us consider the set $\mathcal{M}$ of all the symmetric matrices $M$, such that: All the diagonal entries of $M$ are equal to $1$. All the off-diag …
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