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Some Basic Matrix Theorems - Quandt.com

Some Basic Matrix Theorems Richard E. Quandt Princeton University Definition 1. Let A be a squarematrix of ordern and let λ be a scalarquantity. Then det(A−λI) is called the characteristic polynomial of A. It is clear that the characteristic polynomial is an nth degree polynomial in λ and det(A−λI) = 0 will have n (not necessarily distinct) solutions for λ. ...

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