Results 11 to 20 of about 2,031 (186)

On boundedness and compactness of a certain class of kernel operators

open access: yesJournal of Function Spaces, Volume 9, Issue 1, Page 67-107, 2011., 2011
New conditions for Lp[0, ∞) − Lq[0, ∞) boundedness and compactness (1 < p, q < ∞) of the map f→w(x)∫a(x)b(x)k(x,y)f(y)v(y)dy with locally integrable weight functions v, w and a positive continuous kernel k(x, y) from the Oinarov’s class are obtained.
Elena P. Ushakova, Oleg V. Besov
wiley   +1 more source

Montgomery identity and Ostrowski-type inequalities via quantum calculus

open access: yesOpen Mathematics, 2021
In this paper, we prove a quantum version of Montgomery identity and prove some new Ostrowski-type inequalities for convex functions in the setting of quantum calculus.
Sitthiwirattham Thanin   +4 more
doaj   +1 more source

Some new refinements of strengthened Hardy and Pólya–Knopp′s inequalities

open access: yesJournal of Function Spaces, Volume 7, Issue 2, Page 167-186, 2009., 2009
We prove a new general one‐dimensional inequality for convex functions and Hardy–Littlewood averages. Furthermore, we apply this result to unify and refine the so‐called Boas′s inequality and the strengthened inequalities of the Hardy–Knopp–type, deriving their new refinements as special cases of the obtained general relation. In particular, we get new
Aleksandra Čižmešija   +3 more
wiley   +1 more source

Generalized fractional integral inequalities of Hermite-Hadamard-type for a convex function

open access: yesOpen Mathematics, 2020
The primary objective of this research is to establish the generalized fractional integral inequalities of Hermite-Hadamard-type for MT-convex functions and to explore some new Hermite-Hadamard-type inequalities in a form of Riemann-Liouville fractional ...
Han Jiangfeng   +2 more
doaj   +1 more source

A new note on factored infinite series and trigonometric Fourier series

open access: yes, 2021
In this paper, we have proved two main theorems under more weaker conditions dealing with absolute weighted arithmetic mean summability factors of infinite series and trigonometric Fourier series.
H. Bor
semanticscholar   +1 more source

On Bellman‐Golubov theorems for the Riemann‐Liouville operators

open access: yesJournal of Function Spaces, Volume 7, Issue 3, Page 289-300, 2009., 2009
Superposition of Fourier transform with the Riemann ‐ Liouville operators is studied.
Pham Tien Zung, Victor Burenkov
wiley   +1 more source

An estimate for the best constant in the Lp‐Wirtinger inequality with weights

open access: yesJournal of Function Spaces, Volume 6, Issue 1, Page 1-16, 2008., 2008
We prove an estimate for the best constant C in the following Wirtinger type inequality ∫02πa|w|p≤C∫02πb|w′|p.
Raffaella Giova, Carlo Sbordone
wiley   +1 more source

On Hermite-Hadamard type inequalities for multiplicative fractional integrals

open access: yesMiskolc Mathematical Notes, 2020
In this study, we first establish two Hermite-Hadamard type inequality for multiplicative (geometric) Riemann-Liouville fractional integrals. Then, by using some properties of multiplicative convex function, we give some new inequalities involving ...
H. Budak, K. Özçelik
semanticscholar   +1 more source

A note on maximal operator on ℓ{pn} and Lp(x)(ℝ)

open access: yesJournal of Function Spaces, Volume 5, Issue 1, Page 49-88, 2007., 2007
We consider a discrete analogue of Hardy‐Littlewood maximal operator on the generalized Lebesque space ℓ{pn} of sequences defined on ℤ. It is known a necessary and sufficient condition P which guarantees an existence of a real number p > 1 such that the norms in the space ℓ{pn} and in the classical space ℓp are equivalent.
Aleš Nekvinda, Pankaj Jain
wiley   +1 more source

Refinement of Jensen Mercer and Hermite–Hadamard-Mercer type inequalities for generalized convex functions on co-ordinates with their computational analysis

open access: yesAnnals of Mathematics and Physics
In the current study, the Jensen-Mercer inequality is extended to co-ordinated h-convex functions. Additionally, a novel inequality is employed to derive Hermite–Hadamard-Mercer type inequalities for h-convex functions defined on the co-ordinates of a ...
Toseef Muhammad   +4 more
semanticscholar   +1 more source

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