an expression obtained from a given matrix by taking the determinant of the difference between the matrix and an arbitrary variable times the identity matrix.


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    a scalar for which there exists a nonzero vector such that the scalar times the vector equals the value of the vector under a given linear transformation on a vector space. a root of the characteristic equation of a given matrix.

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    a vector for which there exists a scalar such that the value of the vector under a given transformation is equal to the scalar times the vector.

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    an x-ray that is emitted from an atom when an electron is displaced from an inner shell.

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