The term "matrix pencil" refers to a mathematical concept used in the field of linear algebra, particularly in the context of systems of linear equations, control theory, and numerical analysis. A matrix pencil is typically denoted in the form: \[ \mathcal{A}(\lambda) = A - \lambda B \] where: - \(A\) and \(B\) are given matrices, - \(\lambda\) is a complex variable.
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