Buscar
Mostrando ítems 1-10 de 721
The Semigroup and the Inverse of the Laplacian on the Heisenberg Group
(Universidad de La Frontera. Departamento de Matemática y EstadísticaUniversidade Federal de Pernambuco. Departamento de Matemática, 2010)
A geometry for split operators
(Springer, 2013-12)
We study the set X of split operators acting in the Hilbert space H: X = {T ∈ B(H) : N(T) ∩ R(T) = {0} and N(T) + R(T) = H}. Inside X , we consider the set Y: Y = {T ∈ X : N(T) ⊥ R(T)}. Several characterizations of these ...
Metric and homogeneous structure of closed range operators
(Theta Foundation, 2009-08)
Let CR be the set of all bounded linear operators between Hilbert spaces H, K with closed range. This paper is devoted to the study of the topological properties of CR if certain natural metrics are considered on it. We ...
First-principles calculations and Raman scattering evidence for local symmetry lowering in rhombohedral ilmenite: Temperature- and pressure-dependent studies
(2018-11-07)
ATiO3-type materials may exist in two different crystalline forms: the perovskite and ilmenite. While many papers have devoted their attention to evaluating the structural properties of the perovskite phase, the structural ...
Symmetry and Inverse Closedness for Some Banach ∗-Algebras Associated to Discrete Groups
(Tusi Mathematical Research Group, 2015)
A discrete group G is called rigidly symmetric if for every C*-algebra A the projective tensor product l(1)(G)(circle times) over capA is a symmetric Banach *-algebra. For such a group we show that the twisted crossed ...
A novel CMOS exponential transconductor operating in weak inversion
(Taylor & Francis Group, 2008)
A novel CMOS exponential transconductor operating in weak inversion
(Taylor & Francis Group, 2008)
Commutator Criteria for Magnetic Pseudodifferential Operators
(2009-03-12)
The gauge covariant magnetic Weyl calculus has been introduced and studied in previous works. We prove
criteria in terms of commutators for operators to be magnetic pseudodifferential operators of suitable symbol
classes. ...
Construir un modelo financiero para calcular el VAR para Fondo de Inversión Colectiva con pacto de permanencia Avanzar 180 días
(Universidad EAFITMaestría en Administración FinancieraEscuela de Economía y FinanzasCali, 2018)
Within the strategy of the Coomeva Group, Coomeva Fiduciary was set up with the aim of expanding the portfolio of services to its members -- In this process, the registration and approval of the Collective Investment Fund ...
Pseudodifferential operators with C*-algebra-valued symbols: Abstract characterizations
(AMER MATHEMATICAL SOC, 2008)
Given a separable unital C*-algebra C with norm parallel to center dot parallel to, let E-n denote the Banach-space completion of the C-valued Schwartz space on R-n with norm parallel to f parallel to(2)=parallel to < f, ...