Abstract
The purpose of this note is to pose a problem about the partial multiplicities of a product of two matrix polynomials given those of its factors.
References
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Gohberg, I., Kaashoek, M.A. Unsolved problems in matrix and operator theory, II. partial multiplicities for products. Integr equ oper theory 2, 116–120 (1979). https://doi.org/10.1007/BF01729363
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DOI: https://doi.org/10.1007/BF01729363