Results 11 to 20 of about 44 (42)
Modulation type spaces for generators of polynomially bounded groups and Schrödinger equations [PDF]
, 2018 We introduce modulation type spaces associated with the generators of polynomially bounded groups. Besides strongly continuous groups we study in detail the case of bi-continuous groups, e.g. weak-continuous groups in dual spaces.
Kunstmann, Peer Christian
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On Inverse Spectral Theory for Self-Adjoint Extensions: Mixed Types of Spectra [PDF]
, 1998 LetHbe a symmetric operator in a separable Hilbert space H. Suppose thatHhas some gapJ. We shall investigate the question about what spectral properties the self-adjoint extensions ofHcan have inside the gapJand provide methods on how to construct self ...
Albeverio, Sergio +2 more
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EP Elements in Rings and in Semigroups with Involution and in C*-algebras [PDF]
, 2015 This work includes a survey of most of the results concerning EP elements in semigroups and rings with involution and in C*-algebras. 2010 Mathematics Subject Classification: Primary 46L05, 46J05, 46H05, 46H30, 47A05, 47A53, 47A60, 15A09, 15A33, 16A28 ...
Karanasios, Sotirios
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Fractional powers of non‐negative operators in Fréchet spaces
, 1988 International Journal of Mathematics and Mathematical Sciences, Volume 12, Issue 2, Page 309-320, 1989.
C. Martinez, M. Sanz, V. Calvo
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International Journal of Mathematics and Mathematical Sciences, Volume 2025, Issue 1, 2025.For the Weinstein Laplacian considered on the Hilbert space which makes it a self‐adjoint operator, the Von Neumann spectral decomposition is given. As applications, a new integral representation for the Weinstein heat kernel is given. Also, it is proved that the spectrum of the semigroup associated with the Weinstein Laplacian is reduced to its ...
Abdelilah El Mourni +3 more
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Linear Fractional PDE, Uniqueness of Global Solutions [PDF]
, 2005 Mathematics Subject Classification: 26A33, 47A60, 30C15.In this paper we treat the question of existence and uniqueness of solutions of linear fractional partial differential equations.
Nolte, Bodo +2 more
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Soluciones explícitas de ecuaciones diferenciales matriciales con coeficientes variables
, 2009 La resolución de sistemas de ecuaciones diferenciales de orden superior suele apoyarse en la consideración de un sistema ampliado de primer orden. Este enfoque clásico presenta dos inconvenientes.
Company Rossi, Rafael
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Fractional Powers of Almost Non-Negative Operators [PDF]
, 2005 Mathematics Subject Classification: Primary 47A60, 47D06.In this paper, we extend the theory of complex powers of operators to a class of operators in Banach spaces whose spectrum lies in C \ ]−∞, 0[ and whose resolvent satisfies an estimate ||(λ + A ...
Martínez, Celso +2 more
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On spatial Gevrey regularity for some strongly dissipative second order evolution equations
, 2019 Let A be a positive self-adjoint linear operator acting on a real Hilbert space H and α, c be positive constants. We show that all solutions of the evolution equation u" + Au + c A^α u' = 0 with u(0) ∈ D( A_1/2), u (0) ∈ H belong for all t > 0 to the ...
Haraux, Alain, Otani, Mitsuharu
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, 2007 We give a minimal and maximal description in the sense of AronszajnGagliardo for the real methods in the case of n-tuple of quasi-Banach.
S M S Modarres, Z Ghorbani
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