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Displaying 421 – 440 of 461

Unitary dilations of multi-parameter semigroups of operators

Marek Ptak (1985)

Annales Polonici Mathematici

W*-algebras and invariant functionals

Anthony To-Ming (1976)

Studia Mathematica

Weak Kato-Inequalities and Positive Semigroups.

Anton R. Schep (1985)

Mathematische Zeitschrift

Weak type (1,1) estimates of the maximal function for the Laguerre semigroup in finite dimensions.

Ulla Dinger (1992)

Revista Matemática Iberoamericana

We prove that, in arbitrary finite dimensions, the maximal operator for the Laguerre semigroup is of weak type (1,1). This extends Muckenhoupt's one-dimensional result.

Weighted convolution algebras and their homomorphisms

Sandy Grabiner (1994)

Banach Center Publications

Weighted norm estimates and $L_{p}$ -spectral independence of linear operators

Peer C. Kunstmann, Hendrik Vogt (2007)

Colloquium Mathematicae

We investigate the $L_{p}$ -spectrum of linear operators defined consistently on $L_{p} (Ω)$ for p₀ ≤ p ≤ p₁, where (Ω,μ) is an arbitrary σ-finite measure space and 1 ≤ p₀ < p₁ ≤ ∞. We prove p-independence of the $L_{p}$ -spectrum assuming weighted norm estimates. The assumptions are formulated in terms of a measurable semi-metric d on (Ω,μ); the balls with respect to this semi-metric are required to satisfy a subexponential volume growth condition. We show how previous results on $L_{p}$ -spectral independence can be treated...

Well-posedness of abstract Cauchy problems.

F. Neubrander (1984)

Semigroup forum

Zur Perron-Frobenius-Theorie stark stetiger Halbgruppen.

Günther Greiner (1981)

Mathematische Zeitschrift

Zur Stabilität von C0-Halbgruppen.

Helmut H. Schaefer (1988)

Mathematische Annalen

α-times integrated semigroups: local and global

Miao Li, Quan Zheng (2003)

Studia Mathematica

We investigate the relations between local α-times integrated semigroups and (α + 1)-times integrated Cauchy problems, and then the relations between global α-times integrated semigroups and regularized semigroups.