Results 41 to 50 of about 182 (127)
MathematicsThe goal of this manuscript is to introduce a new Stancu generalization of the modified Szász–Kantorovich operator connecting Riemann–Liouville fractional operators via Charlier polynomials.
Nadeem Rao +2 more
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“The Way They Speak of Masters and Johnson”: The Rise and Disappearance of Sex Therapy, 1960–2000
Journal of the History of the Behavioral Sciences, Volume 62, Issue 2, Spring 2026.ABSTRACT A keyword search of “sex therapy” in the New York Times shows a rapid rise for articles covering the discipline in the 1970s, an equally rapid reduction in the 1980s, and further decline in the 1990s and into the 2000s. This surprising inflection, given that sex as a marketable construction did not decline in the late 20th century, opens room ...
Hannie Smolyanitsky
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Asymptotic Properties for a General Class of Szász–Mirakjan–Durrmeyer Operators
Mathematical Methods in the Applied Sciences, Volume 49, Issue 2, Page 734-743, 30 January 2026.ABSTRACT In this paper, we introduce a general family of Szász–Mirakjan–Durrmeyer type operators depending on an integer parameter j∈ℤ$$ j\in \mathbb{Z} $$. They can be viewed as a generalization of the Szász–Mirakjan–Durrmeyer operators, Phillips operators, and corresponding Kantorovich modifications of higher order.
Ulrich Abel +3 more
wiley +1 more source
Journal of Inequalities and ApplicationsIn this paper, we employ the Szász-Mirakyan estimation together with the Riemann-Liouville fractional integral operator to solve both the first and second kinds of fractional Volterra integral equations.
Petro Bwire +3 more
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On the Reducibility of Weighted Composition Operators Generated by Periodic Transformations
International Journal of Mathematics and Mathematical Sciences, Volume 2026, Issue 1, 2026.In this article, we study the reducibility of weighted composition operators (also known as weighted displacement operators) acting on Banach spaces of continuous functions on a compact topological space X. We consider operators of the form Bu(x) = a(x)u(α(x)), where α : X⟶X is a continuous mapping and a is a continuous function.
Teube Cyrille Mbainaissem +3 more
wiley +1 more source
Fractal and FractionalThis paper is concerned with the adaptive backstepping synchronization control for a class of variable-order (VO) fractional uncertain nonlinear system with external disturbances and a dead zone. A kind of VO fractional command filter is employed to cope
Xinyu Si +4 more
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Wavelets‐Associated Approximation to the Family of New Class of q‐Szász Operators Via q‐Analog
Journal of Function Spaces, Volume 2026, Issue 1, 2026.This study investigates the approximation properties of a recently developed class of q‐Szász–Mirakjan operators integrated with wavelets. By constructing these q‐Szász‐type operators and introducing their Kantorovich variants, we establish Lp‐approximation results for 1 ≤ p ≤ ∞.
Md. Nasiruzzaman +4 more
wiley +1 more source
Quantitative Estimates for Positive Linear Operators in terms of the Usual Second Modulus
Abstract and Applied Analysis, 2015 We give accurate estimates of the constants Cn(A(I),x) appearing in direct inequalities of the form |Lnf(x)-f(x)|≤Cn(A(I),x)ω2 f;σ(x)/n, f∈A(I), x∈I, and n=1,2,…, where Ln is a positive linear operator reproducing linear functions and acting on real ...
José A. Adell, A. Lekuona
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Towards the best constant in front of the Ditzian-Totik modulus of smoothness
Journal of Inequalities and Applications, 2016 We give accurate estimates for the constants K ( A ( I ) , n , x ) = sup f ∈ A ( I ) | L n f ( x ) − f ( x ) | ω σ 2 ( f ; 1 / n ) , x ∈ I , n = 1 , 2 , … , $$ K\bigl(\mathcal{A}(I), n, x\bigr)=\sup_{f\in\mathcal{A}(I)}\frac{|L_{n} f(x)-f(x)|}{\omega_ ...
José A Adell, Alberto Lekuona
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Weighted Approximation by Szász–Mirakyan–Durrmeyer Operators Reproducing Exponential Functions
MathematicsWe examine a Szász–Mirakyan–Durrmeyer type operator that reproduces the functions 1 and e2ax for a fixed parameter a>0. While its exponential reproduction property has been described in the classical literature, the effect of exponential weights on its ...
Gülsüm Ulusoy Ada, Ali Aral
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