A measure of how popular the 'WordItem' is in written usage. The longer the blue bar, the more common/popular the word. Very short blue bars indicate rare usage.

noun (mathematics) any number such that a given square matrix minus that number times the identity matrix has a zero determinant characteristic root of a square matrix; eigenvalue of a matrix; eigenvalue of a square matrix.

noun (mathematics) any number such that a given square matrix minus that number times the identity matrix has a zero determinant characteristic root of a square matrix; eigenvalue of a matrix; eigenvalue of a square matrix.

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