Results 11 to 20 of about 3,328,865 (187)

Supermixing and hypermixing of strongly continuous semigroups and their direct sum

open access: yesJournal of Taibah University for Science, 2021
Supermixing and hypermixing strongly continuous semigroups are introduced in this paper. It is proved that supermixing preserves under quasiconjugacy. Moreover, it is established that if a strongly continuous semigroup is supermixing(hypermixing), then ...
Mansooreh Moosapoor
doaj   +2 more sources

Spectral inclusions and stability results for strongly continuous semigroups [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
We prove some spectral inclusions for strongly continuous semigroups. Some stability results are also established.
Abdelkader Elkoutri, Mohamed Aziz Taoudi
doaj   +2 more sources

Periods of strongly continuous semigroups

open access: yesBulletin of the London Mathematical Society, 2011
In this paper, we study the set of periods of (chaotic) strongly continuous semigroups. We prove a relationship between eigenvalues on the imaginary axis of the generator of a strongly continuous semigroup and the set of periods of the semigroup itself.
Gustavo A. Muñoz-Fernández   +2 more
openaire   +2 more sources

The discrete fragmentation equations : semigroups, compactness and asynchronous exponential growth [PDF]

open access: yes, 2012
In this paper we present a class of fragmentation semigroups which are compact in a scale of spaces defined in terms of finite higher moments. We use this compactness result to analyse the long time behaviour of such semigroups and, in particular, to ...
Banasiak, Jacek, Lamb, Wilson
core   +4 more sources

Convolution semigroups of states. [PDF]

open access: yes, 2011
Convolution semigroups of states on a quantum group form the natural noncommutative analogue of convolution semigroups of probability measures on a locally compact group.
Lindsay, Martin, Skalski, Adam G.
core   +4 more sources

Composition Semigroups on Weighted Bergman Spaces Induced by Doubling Weights

open access: yesJournal of Mathematics, 2021
We prove that composition semigroups are strongly continuous on weighted Bergman spaces with doubling weights. Point spectra and compact resolvent operators of infinitesimal generators of composition semigroups are characterized.
Fanglei Wu
doaj   +1 more source

Ces\`{a}ro-Type Operator on the Dirichlet Space of the Upper Half Plane

open access: yesCommunications in Advanced Mathematical Sciences, 2023
We construct a Ces\`{a}ro-type operator acting on Dirichlet space of the upper half plane using the approach of strongly continuous semigroups of composition operators on Banach spaces.
Job Bonyo, David Ambogo, Effie Oyugi
doaj   +1 more source

Sun dual theory for bi-continuous semigroups [PDF]

open access: yes, 2022
The sun dual space corresponding to a strongly continuous semigroup is a known concept when dealing with dual semigroups, which are in general only weak$^*$-continuous.
Schwenninger, Felix L.; id_orcid   +1 more
core   +1 more source

Automatic presentations for semigroups [PDF]

open access: yes, 2009
Special Issue: 2nd International Conference on Language and Automata Theory and Applications (LATA 2008)This paper applies the concept of FA-presentable structures to semigroups.
Oliver, Graham   +4 more
core   +2 more sources

Strongly Continuous Semigroups [PDF]

open access: yes, 2012
In Chapter 2 we showed that the examples of Chapter 1, which were described by ordinary differential equations, can be written as a first-order differential equation $$\dot{x}(t) = Ax(t) + Bu(t), \quad \quad y(t) = C_x(t) = Du(t),$$ (5.1) where x(t) is a vector in Rn or Cn.
Birgit Jacob, Hans J. Zwart
openaire   +1 more source

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