Results 31 to 40 of about 12,791 (237)

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

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

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

Components of linear-fractional composition operators

open access: yesJournal of Mathematical Analysis and Applications, 2003
Let \(\phi\) denote a holomorphic function on the open unit disc \(U\) in the complex plane with \(\phi(U) \subset U\). The composition operator \(C_{\phi}(f):=f \circ \phi\) is bounded in the Hardy space \(H^2\). Denote by \(\text{comp} (H^2)\) the collection of all composition operators on \(H^2\) endowed with the metric induced by the operator norm.
openaire   +1 more source

Linear relations in the Calkin algebra for composition operators [PDF]

open access: yesTransactions of the American Mathematical Society, 2007
We consider this and related questions: When is a finite linear combination of composition operators, acting on the Hardy space or the standard weighted Bergman spaces on the unit disk, a compact operator?
Kriete, Thomas, Moorhouse, Jennifer
openaire   +3 more sources

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

Non-linear composition and infinite conformal symmetry of topologically non-trivial solutions in $$(3+1)$$ ( 3 + 1 ) -dimensional Yang–Mills theory

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
An infinite-dimensional family of analytic solutions in pure SU(2) Yang–Mills theory at finite density in $$(3+1)$$ ( 3 + 1 ) dimensions is constructed. It is labelled by two integeres (p and q) as well as by a two-dimensional free massless scalar field.
Fabrizio Canfora
doaj   +1 more source

Algebraic Reflexivity of Non-Canonical Isometries on Lipschitz Spaces

open access: yesMathematics, 2021
Let Lip([0,1]) be the Banach space of all Lipschitz complex-valued functions f on [0,1], equipped with one of the norms: fσ=|f(0)|+f′L∞ or fm=max|f(0)|,f′L∞, where ·L∞ denotes the essential supremum norm. It is known that the surjective linear isometries
Antonio Jiménez-Vargas   +1 more
doaj   +1 more source

2-Complex Symmetric Composition Operators on H2

open access: yesAxioms, 2022
In this paper, we study 2-complex symmetric composition operators with the conjugation J, defined by Jf(z)=(f(z¯))¯, on the Hardy space H2. More precisely, we obtain the necessary and sufficient condition for the composition operator Cϕ to be 2-complex ...
Lian Hu, Songxiao Li, Rong Yang
doaj   +1 more source

Operation Composition Based on Linear Logic

open access: yesPhysics Procedia, 2012
AbstractWhile most literatures concentrate on composing services to reach complex service requirement, they all neglect one fact: service may has several operations which can also be composed to accomplish a complex function. This paper considers operation composition and imports linear logic to reason the correctness of composed operation.
openaire   +1 more source

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