Results 31 to 40 of about 4,469,777 (359)
Composition and Inversion of Schema Mappings [PDF]
, 2010 In the recent years, a lot of attention has been paid to the development of solid foundations for the composition and inversion of schema mappings. In this paper, we review the proposals for the semantics of these crucial operators.
Arenas, Marcelo +3 more
core +1 more source
Composition Operator on Bergman-Orlicz Space
Journal of Inequalities and Applications, 2009 Let 𝔻 denote the open unit disk in the complex plane and let dA(z) denote the normalized area measure on 𝔻. For α>−1 and Φ a twice differentiable, nonconstant, nondecreasing, nonnegative, and convex function on
Guangfu Cao, Zhijie Jiang
doaj +2 more sources
Difference of composition operators on weighted Bergman spaces over the half-plane
Journal of Inequalities and Applications, 2016 Recently, the bounded, compact and Hilbert-Schmidt difference of composition operators on the Bergman spaces over the half-plane are characterized in (Choe et al. in Trans. Am. Math. Soc., 2016, in press).
Maocai Wang, Changbao Pang
doaj +1 more source
Toeplitz operators in the commutant of a composition operator [PDF]
Studia Mathematica, 1999 B. Cload
openaire +3 more sources
Fredholm Weighted Composition Operator on Weighted Hardy Space
, 2013 This paper gives a unified characterization of Fredholm weighted composition operator on a class of weighted Hardy spaces.
Liankuo Zhao
semanticscholar +1 more source
On the isometric composition operators on the Bloch space in C^n [PDF]
, 2008 Let phi be a holomorphic self-map of a bounded homogeneous domain D in C^n. In this work, we show that the composition operator C_phi is bounded on the Bloch space B of the domain and provide estimates on its operator norm.
Allen, Robert F., Colonna, Flavia
core +2 more sources
Essential norm estimate of a composition operator between Bloch-type spaces in the unit ball
, 2012 Let Bn be the unit ball of Cn and φ = (φ1, . . . , φn) a holomorphic self-map of Bn. Let p, q > 0, be an estimate of the essential norm of a bounded composition operator Cφ induced by φ between the p-Bloch space β (Bn) and q-Bloch space β(Bn) given in ...
Honggang Zeng, Ze‐hua Zhou
semanticscholar +1 more source
Fredholm composition operators [PDF]
Proceedings of the American Mathematical Society, 1980 In this paper a necessary and sufficient condition for a composition operator C T {C_T} on L 2 [ 0 , 1 ] {L^2}[0,1] to be a Fredholm operator is given.
openaire +2 more sources
On Numerical Approximations of the Koopman Operator [PDF]
Mathematics, 2020 We study numerical approaches to computation of spectral properties of composition operators. We provide a characterization of Koopman Modes in Banach spaces using Generalized Laplace Analysis.
I. Mezić
semanticscholar +1 more source
Composition operators on the Schwartz space [PDF]
Revista Matemática Iberoamericana, 2018 We study composition operators on the Schwartz space of rapidly decreasing functions. We prove that such a composition operator is never a compact operator and we obtain necessary or sufficient conditions for the range of the composition operator to be closed.
GALBIS VERDU, ANTONIO +1 more
openaire +4 more sources