Wyniki wyszukiwania

1

Uniqueness, strong forms of uniqueness and negative powers of contractions

100%

Esterle J.

Banach Center Publications

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1994

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tom 30

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nr 1

127-145

2

Sur quelques extensions au cadre banachique de la notion d'opérateur de Hilbert-Schmidt

51%

Abdillah S., Esterle J., Haak B.

Studia Mathematica

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2015

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tom 227

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nr 3

193-218

EN

In this work we discuss several ways to extend to the context of Banach spaces the notion of Hilbert-Schmidt operator: p-summing operators, γ-summing or γ-radonifying operators, weakly* 1-nuclear operators and classes of operators defined via factorization properties. We introduce the class PS₂(E;F) of pre-Hilbert-Schmidt operators as the class of all operators u: E → F such that w ∘ u ∘ v is Hilbert-Schmidt for every bounded operator v: H₁ → E and every bounded operator w: F → H₂, where H₁ and H₂ are Hilbert spaces. Besides the trivial case where one of the spaces E or F is a ''Hilbert-Schmidt space", this space seems to have been described only in the easy situation where one of the spaces E or F is a Hilbert space.

3

Boundary values of analytic semigroups and associated norm estimates

51%

Chalendar I., Esterle J., Partington J.

Banach Center Publications

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2010

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tom 91

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nr 1

87-103

EN

The theory of quasimultipliers in Banach algebras is developed in order to provide a mechanism for defining the boundary values of analytic semigroups on a sector in the complex plane. Then, some methods are presented for deriving lower estimates for operators defined in terms of quasinilpotent semigroups using techniques from the theory of complex analysis.

4

Discontinuous homomorphisms from C(K)

38%

Esterle J.

Banach Center Publications

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1982

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tom 8

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nr 1

251-262

Ograniczanie wyników

3 Banach Center Publications

1 Studia Mathematica

4 Esterle J.

1 Abdillah S.

1 Chalendar I.

1 Haak B.

1 Partington J.

1 2015

1 2010

1 1994

1 1982

Uniqueness, strong forms of uniqueness and negative powers of contractions

Sur quelques extensions au cadre banachique de la notion d'opérateur de Hilbert-Schmidt

Boundary values of analytic semigroups and associated norm estimates

Discontinuous homomorphisms from C(K)