Results 21 to 30 of about 5,616,202 (233)

On component-wise dissimilarity measures and metric properties in pattern recognition [PDF]

open access: yesPeerJ Computer Science, 2022
In many real-world applications concerning pattern recognition techniques, it is of utmost importance the automatic learning of the most appropriate dissimilarity measure to be used in object comparison.
Enrico De Santis   +2 more
doaj   +2 more sources

Analytic Automorphisms and Transitivity of Analytic Mappings

open access: yesMathematics, 2020
In this paper, we investigate analytic automorphisms of complex topological vector spaces and their applications to linear and nonlinear transitive operators.
Zoriana Novosad, Andriy Zagorodnyuk
doaj   +1 more source

Composition operators on Banach function spaces [PDF]

open access: yes, 2013
The aim of this thesis is to provide a survey of the topic of composition operators on spaces of (equivalence classes of) measurable functions and attempt to unify some of the most important results contained in the literature.
de Jager, Pierre
core   +1 more source

Unbounded B-Fredholm operators on Hilbert spaces [PDF]

open access: yes, 2008
This paper is concerned with the study of a class of closed linear operators densely defined on a Hilbert space H and called B-Fredholm operators.
Berkani, M.   +3 more
core   +1 more source

Spectra of Weighted Composition Operators with Quadratic Symbols

open access: yesConcrete Operators, 2022
Previously, spectra of certain weighted composition operators W ѱ, φ on H2 were determined under one of two hypotheses: either φ converges under iteration to the Denjoy-Wolff point uniformly on all of 𝔻 rather than simply on compact subsets, or φ is ...
Doctor Jessica   +4 more
doaj   +1 more source

On the Composition Ideals of Schatten Class Type Mappings

open access: yesJournal of Mathematics, 2016
We study the composition ideals of multilinear and polynomial mappings generated by Schatten classes. We give some coincidence theorems for Cohen strongly 2-summing multilinear operators and factorization results like that given by Lindenstrauss ...
Abdelaziz Belaada   +2 more
doaj   +1 more source

Composition Operators and Multiplication Operators on Weighted Spaces of Analytic Functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2007
Let V be an arbitrary system of weights on an open connected subset G of ℂN(N≥1) and let B(E) be the Banach algebra of all bounded linear operators on a Banach space E.
J. S. Manhas
doaj   +1 more source

Uncertainty Estimation for Machine Learning Models in Multiphase Flow Applications

open access: yesInformatics, 2021
In oil and gas production, it is essential to monitor some performance indicators that are related to the composition of the extracted mixture, such as the liquid and gas content of the flow.
Luca Frau   +3 more
doaj   +1 more source

Factors associated with grain feeding in dairy farms located in the central-western region of Paraná State, Brazil

open access: yesSemina: Ciências Agrárias, 2021
This study aimed to investigate factors associated with grain feeding and determine the typology of dairy farms that use high-grain diets. Twenty-two farm operators were interviewed in three municipalities located in the central-western region of Paraná ...
Pedro Gustavo Loesia Lima   +4 more
doaj   +1 more source

On complex symmetry of composition operators on Bergman space

open access: yes四川大学学报. 自然科学版, 2020
In this paper, we discuss about the necessary and sufficient conditions for the composition operators on the Bergman space, meanwhile give complex symmetric composition operators on Bergman space whose symbols are linear-fractional but not automorphic.
Hong Jun-Ying, Han Xue-Hong
doaj  

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