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Fermat's equation over 2-by-2 matrices

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We study the solvability of the Fermat's matrix equation in some classes of 2-by-2 matrices. We prove the Fermat's matrix equation has infinitely many solutions in a set of 2-by-2 positive semidefinite integral matrices, and has no nontrivial solutions in some classes including 2-by-2 symmetric rational matrices and stochastic quadratic field matrices.

Abstract

We study the solvability of the Fermat's matrix equation in some classes of 2-by-2 matrices. We prove the Fermat's matrix equation has infinitely many solutions in a set of 2-by-2 positive semidefinite integral matrices, and has no nontrivial solutions in some classes including 2-by-2 symmetric rational matrices and stochastic quadratic field matrices.

참고문헌 (15)

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  10. I. Kaddoura, "A matrix analog to last Fermat’s theorem and Beal’s conjecture", 22th LAAS International Science Conference (2016)
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  14. L. N. Vaserstein, "Algebraic K-theory and algebraic number theory", pp.1090~ (1989), Amer. Math. Soc
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