A NOTE ON DIOPHANTINE ALGEBRAIC EQUATIONS OF SQUARE CIRCULANT MATRICES
Keywords:
Diophantine matrix equations, circulant matrices, Fermat matrix equation, Markov matrix equationDOI:
https://doi.org/10.17654/0972555524030Abstract
We obtain necessary and sufficient conditions for solving Diophantine algebraic matrix equations in terms of square circulant matrices. We apply these conditions to show that the Fermat matrix equation $X^n+Y^n=Z^n, n \in \mathbf{N}, n \geq 3$, has no nontrivial solution of that kind, and to construct solutions of the Markov matrix equation
$$
X^2+Y^2+Z^2=3 X Y Z
$$
Received: June 11, 2024
Revised: July 18, 2024
Accepted: July 25, 2024
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