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Quaestiones Mathematicae(2)
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A Necessary Algebraic Condition for Controllability and Observability of Linear Time-Varying Systems
ArticleAbstract: In this note, we give an algebraic condition which is necessary for the system x′(t) = A(t)x(t) + B(Palabras claves:Algebraic condition, Linear time-varying control systems, Noncontrollability, NonobservabilityAutores:Hugo Leiva, Siegmund S.Fuentes:googlescopusA characterization of semilinear dense range operators and applications
ArticleAbstract: We characterize a broad class of semilinear dense range operators G H: W → Z given by the followingPalabras claves:Autores:Hugo Leiva, Merentes N., Sanchez J.L.Fuentes:googlescopusA lemma on C<inf>0</inf>-semigroups and applications
ArticleAbstract: In this note we characterize a large class of C0-semigroups which can be applied to prove the existePalabras claves:C -semigroup 0, Existence of solutions, Systems of partial differential equationsAutores:Hugo LeivaFuentes:googlescopusControllability of linear time varying systems: new algebraic criteria
Conference ObjectAbstract: This paper presents algebraic rank conditions for the complete controllability of the system. x(t)=Palabras claves:Autores:Hugo Leiva, Lehman B.Fuentes:googlescopusControllability of semilinear impulsive nonautonomous systems
ArticleAbstract: In this paper we apply Rothes type fixed-point theorem to prove the controllability of the followingPalabras claves:controllability, nonlinear impulsive nonautonomous systems, Rothe's fixed-point theoremAutores:Hugo LeivaFuentes:googlescopusExistence, stability and smoothness of bounded solutions for an impulsive semilinear system of parabolic equations
ArticleAbstract: In this paper we study the existence, stability and smoothness of bounded solutions for an impulsivePalabras claves:Bounded solutions, Impulsive semilinear system of parabolic equations, Stability, smoothnessAutores:Hugo Leiva, Zoraida SívoliFuentes:scopusOn the continuity of the adjoint of evolution operators
ArticleAbstract: By associating a quasi semigroup to a commutative evolution operator and using techniques from vectoPalabras claves:adjoint of evolution operators, Asplund spaces, Gel’fand integral, strongly continuous semigroupsAutores:Ambrosio Tineo Moya, Barcenas D., Hugo Leiva, Luis Bladismir Ruiz LealFuentes:googlescopusQuasisemigroups and evolution equations
Book PartAbstract: We study the notion of Quasisemigroup of bounded linear operators as a generalizationof that of stroPalabras claves:Generator, QuasisemigroupAutores:Ambrosio Tineo Moya, Barcenas D., Hugo LeivaFuentes:scopusSolvability of semilinear equations in hilbert spaces
ArticleAbstract: In this paper, we study the existence of solutions for a broad class of semilinear equations in HilbPalabras claves:Approximate controllability, Hilbert space, Semilinear equation, Semilinear evolution equation, strongly continuous semigroupAutores:Hugo LeivaFuentes:googlescopus