Results 41 to 50 of about 4,689,287 (347)

Operator representations of function algebras and functional calculus [PDF]

open access: yesOpuscula Mathematica, 2011
This paper deals with some operator representations \(\Phi\) of a weak*-Dirichlet algebra \(A\), which can be extended to the Hardy spaces \(H^{p}(m)\), associated to \(A\) and to a representing measure \(m\) of \(A\), for \(1\leq p\leq\infty\).
Adina Juratoni, Nicolae Suciu
doaj   +1 more source

Non-commutative functional calculus: Unbounded operators [PDF]

open access: yesJournal of Geometry and Physics, 2009
In a recent work, \cite{cgss}, we developed a functional calculus for bounded operators defined on quaternionic Banach spaces. In this paper we show how the results from \cite{cgss} can be extended to the unbounded case, and we highlight the crucial differences between the two cases.
Sabadini, Irene   +11 more
openaire   +8 more sources

Particular case of operator calculus for generalized functions with supports in cone

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2012
In this work the construction of functional calculus for strongly continuous semigroups of operators in Schwartz distribution algebra on some cone is generalized.
A. V. Solomko
doaj   +1 more source

The stack calculus [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2013
We introduce a functional calculus with simple syntax and operational semantics in which the calculi introduced so far in the Curry-Howard correspondence for Classical Logic can be faithfully encoded.
Alberto Carraro   +2 more
doaj   +1 more source

Non-occurrence of the Lavrentiev phenomenon for a class of convex nonautonomous Lagrangians

open access: yesOpen Mathematics, 2020
We consider the classical functional of the Calculus of Variations of the ...
Mariconda Carlo, Treu Giulia
doaj   +1 more source

The Arens-Calderon theorem for commutative topological algebras

open access: yesExtracta Mathematicae
A theorem of Arens and Calderon states that if A is a commutative Banach algebra with Jacobson radical Rad(A), and if a0 , . . . , an∈ A with a0 ∈ Rad(A) and a1 an invertible element of k A, then there exists y ∈ Rad(A) such that Σ ak yk = 0.
M. Weigt, I. Zarakas
doaj   +1 more source

Quantitative functional calculus in Sobolev spaces

open access: yesJournal of Function Spaces and Applications, 2004
In the frame work of Sobolev (Bessel potential) spaces Hn(Rd,R or C), we consider the nonlinear Nemytskij operator sending a function x∈Rd↦f(x) into a composite function x∈Rd↦G(f(x),x).
Carlo Morosi, Livio Pizzocchero
doaj   +1 more source

Divided Differences in Noncommutative Geometry: Rearrangement Lemma, Functional Calculus and Expansional Formula [PDF]

open access: yes, 2014
We state a generalization of the Connes-Tretkoff-Moscovici Rearrangement Lemma and give a surprisingly simple (almost trivial) proof of it. Secondly, we put on a firm ground the multivariable functional calculus used implicitly in the Rearrangement Lemma
M. Lesch
semanticscholar   +1 more source

Improved Outcomes for Older Children, Adolescents, and Young Adults With Neuroblastoma in the Post‐Immunotherapy Era: An Updated Report From the International Neuroblastoma Risk Group

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background We describe clinical and biologic characteristics of neuroblastoma in older children, adolescents, and young adults (OCAYA); describe survival outcomes in the post‐immunotherapy era; and identify if there is an age cut‐off that best discriminates outcomes.
Rebecca J. Deyell   +14 more
wiley   +1 more source

A weak version of path-dependent functional Itô calculus [PDF]

open access: yesAnnals of Probability, 2017
We introduce a variational theory for processes adapted to the multi-dimensional Brownian motion filtration that provides a differential structure allowing to describe infinitesimal evolution of Wiener functionals at very small scales.
Dorival Leão   +2 more
semanticscholar   +1 more source

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