On simultaneous extension of continuous functions (A generalization of theorems of Rudin-Carleson and Bishop)
A. Pełczyński (1964)
Studia Mathematica
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A. Pełczyński (1964)
Studia Mathematica
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Lynn Williams, J. Wells, T. Hayden (1971)
Studia Mathematica
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Schmidt, Klaus D., Waldschaks, Gerd (1991)
Portugaliae mathematica
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A. Pełczyński (1964)
Studia Mathematica
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Charles Cleaver (1972)
Studia Mathematica
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Janusz Dronka (1993)
Collectanea Mathematica
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In this paper we give estimations of Istratescu measure of noncompactness I(X) of a set X C lp(E1,...,En) in terms of measures I(Xj) (j=1,...,n) of projections Xj of X on Ej. Also a converse problem of finding a set X for which the measure I(X) satisfies the estimations under consideration is considered.
Oscar Blasco (1991)
Publicacions Matemàtiques
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The duality between H1 and BMO, the space of functions of bounded mean oscillation (see [JN]), was first proved by C. Fefferman (see [F], [FS]) and then other proofs of it were obtained. In this paper we shall study such space in little more detail and we shall consider the H1-BMO duality for vector-valued functions in the more general setting of spaces of homogeneous type (see [CW]).
Esser, Martinus (1958)
Portugaliae mathematica
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T. Figiel, T. Iwaniec, A. Pełczyński (1984)
Studia Mathematica
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Gonshor, Harry (1966)
Portugaliae mathematica
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Alberto Bressan (1993)
Studia Mathematica
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