Results 11 to 20 of about 830,132 (317)

Improvements of operator reverse AM-GM inequality involving positive linear maps [PDF]

open access: goldJournal of Inequalities and Applications, 2020
In this paper, we shall present some reverse arithmetic-geometric mean operator inequalities for unital positive linear maps. These inequalities improve some corresponding results due to Xue (J. Inequal. Appl. 2017:283, 2017).
Shazia Karim   +2 more
doaj   +2 more sources

A Voronovskaya-type theorem for a positive linear operator [PDF]

open access: goldInternational Journal of Mathematics and Mathematical Sciences, 2006
We consider a sequence of positive linear operators which approximates continuous functions having exponential growth at infinity.
Alexandra Ciupa
doaj   +2 more sources

Generalized Refinements of Reversed AM-GM Operator Inequalities for Positive Linear Maps

open access: yesAxioms, 2023
We shall present some more generalized and further refinements of reversed AM-GM operator inequalities for positive linear maps due to Xue’s and Ali’s publications.
Yonghui Ren
doaj   +3 more sources

A Class of Positive Linear Operators [PDF]

open access: bronzeCanadian Mathematical Bulletin, 1968
Let F[a, b] be the linear space of all real valued functions defined on [a, b]. A linear operator L: C[a, b] → F[a, b] is called positive (and hence monotone) on C[a, b] if L(f)≥0 whenever f≥0. There has been a considerable amount of research concerned with the convergence of sequences of the form {Ln(f)} to f where {Ln} is a sequence of positive ...
J. P. King
openalex   +3 more sources

Use of identity of A. Hurwitz for construction of a linear positive operator of approximation

open access: diamondJournal of Numerical Analysis and Approximation Theory, 2002
By using a general algebraic identity of Adolf Hurwitz [1], which generalizes an important identity of Abel, we construct a new operator \(S_m^{(\beta_1,\ldots,\beta_m)}\) approximating the functions. A special case of this is the operator \(Q_m^\beta\)
Dimitrie D. Stancu
doaj   +5 more sources

Means of positive linear operators

open access: yesMathematische Annalen, 1980
Kubo, Fumio, Ando, Tsuyoshi
openaire   +3 more sources

More on the extension of linear operators on Riesz spaces

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2022
The classical Kantorovich theorem asserts the existence and uniqueness of a linear extension of a positive additive mapping, defined on the positive cone $E^+$ of a Riesz space $E$ taking values in an Archimedean Riesz space $F$, to the entire space $E$.
O.G. Fotiy, A.I. Gumenchuk, M.M. Popov
doaj   +1 more source

The Generalized Inequalities via Means and Positive Linear Mappings [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2022
In this paper, we establish further improvements  of the Young inequality and its reverse. Then, we assert operator versions corresponding them. Moreover, an application including positive linear mappings is given.
Leila Nasiri, Mehdi Shams
doaj   +1 more source

On a New Generalization of Bernstein-Type Rational Functions and Its Approximation

open access: yesMathematics, 2022
In this study, we introduce a new generalization of a Bernstein-type rational function possessing better estimates than the classical Bernstein-type rational function.
Esma Yıldız Özkan, Gözde Aksoy
doaj   +1 more source

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