Abstract
For any linear operator defined over an arbitrary field k, there is a basis in which this matrix is a generalized Jordan matrix (of the second kind) with elements in the field k. For any linear operator, such a matrix is defined uniquely up to permutation of diagonal blocks.
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Dalalyan, S.G. Generalized Jordan matrix of a linear operator. Math Notes 82, 25–32 (2007). https://doi.org/10.1134/S0001434607070048
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DOI: https://doi.org/10.1134/S0001434607070048