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A Binomial-like Matrix Equation

Alin Bostan and Thierry Combot
The American Mathematical Monthly
Vol. 119, No. 7 (August‒September 2012), pp. 593-597
DOI: 10.4169/amer.math.monthly.119.07.593
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Page Count: 5
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A Binomial-like Matrix Equation
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Abstract We show that a pair of matrices satisfying a certain algebraic identity, reminiscent of the binomial theorem, must have the same characteristic polynomial. This is a generalization of Problem 4 (11th grade) from the Romanian National Mathematical Olympiad 2011.

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