Inductive limit of operators and its applications
J. Janas (1988)
Studia Mathematica
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J. Janas (1988)
Studia Mathematica
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J. Janas (1983)
Studia Mathematica
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Vijay Gupta (1995)
Publicacions Matemàtiques
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In the present paper, we prove a global direct theorem for the modified Baskakov type operators in terms of so called Ditzian-Totik modulus of smoothness.
J. Alvarez (1989)
Studia Mathematica
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Ernst J. Albrecht, Florian-Horia Vasilescu (1974)
Czechoslovak Mathematical Journal
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S. Kwapień (1968)
Studia Mathematica
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Albrecht Pietsch (1982)
Banach Center Publications
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Schmeelk, John, Takaci, Arpad (1992)
Portugaliae mathematica
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Muneo Chō, Makoto Takaguchi (1984)
Studia Mathematica
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Vladimír Muller, Andrzej Sołtysiak (1992)
Studia Mathematica
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A formula is given for the (joint) spectral radius of an n-tuple of mutually commuting Hilbert space operators analogous to that for one operator. This gives a positive answer to a conjecture raised by J. W. Bunce in [1].