On conservative nonregular Nörlund and weighted mean matrices (Q1282001)

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scientific article; zbMATH DE number 1269661
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On conservative nonregular Nörlund and weighted mean matrices
scientific article; zbMATH DE number 1269661

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    On conservative nonregular Nörlund and weighted mean matrices (English)
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    20 June 1999
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    The author obtains the following results: Theorem 1. Every conservative nonregular real Nörlund matrix is a Schur matrix. Theorem 2. Every conservative nonregular weighted mean matrix is a Schur matrix. He observes that the analogue of Theorem 1 for complex Nörlund matrices remains an open question.
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    Nörlund matrix
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    Schur matrix
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    weighted mean matrix
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