Results 81 to 90 of about 12,578 (196)
Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2019 In this manuscript, we study the existence, uniqueness and various kinds of Ulam stability including Ulam-Hyers stability, generalized Ulam-Hyers stability, Ulam-Hyers-Rassias stability, and generalized Ulam-Hyers-Rassias stability of the solution to an ...
Akbar Zada, Hira Waheed
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Ulam Stability of a Quartic Functional Equation
Abstract and Applied Analysis, 2012 The oldest quartic functional equation was introduced by J. M. Rassias in (1999), and then was employed by other authors. The functional equation f(2x + y) + f(2x − y) = 4f(x + y) + 4f(x − y) + 24f(x) − 6f(y) is called a quartic functional equation, all of its solution is said to be a quartic function.
Bodaghi, Abasalt +2 more
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Next‐Generation LiS Batteries: Impact of Nanowire‐Based Electrocatalysts
Batteries &Supercaps, Volume 9, Issue 2, February 2026.The graphical abstract features the central themes of this review. It highlights the key challenges limiting the practical applications of lithium–sulfur batteries (LSBs) and discusses how nanowire (NW)‐based electrocatalysts help to address these issues.
Tushar Prashant Pandit +4 more
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MathematicsUlam type stability is an important property studied for different types of differential equations. When this type of stability is applied to boundary value problems, there are some misunderstandings in the literature. In connection with this, initially,
Ravi P. Agarwal +2 more
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European Journal of Pain, Volume 30, Issue 2, February 2026.ABSTRACT Background Machine learning (ML) is increasingly used to analyse pain‐related data, emphasising how well variables classify individuals, that is, training an algorithm to assign people to predefined groups such as high versus low pain sensitivity, rather than focusing on p‐values.
Jörn Lötsch +2 more
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On a general Hyers‐Ulam stability result
International Journal of Mathematics and Mathematical Sciences, 1995 In this paper, we prove two general theorems about Hyers‐Ulam stability of functional equations. As particular cases we obtain many of the results published in the last ten years on the stability of the Cauchy and quadratic equation.
Costanz Borelli, Gian Luigi Forti
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Small, Volume 22, Issue 9, 12 February 2026.This perspective highlights the design evolution of Li2S‐based lithium‐batteries, illustrating sulfur redox chemistry and Li2S activation. Emphasis is placed on catalytic interfaces, hierarchical carbon frameworks, and electrolyte‐solvation co‐design, enabling lithium‐free, anode‐free, and solid‐state Li‐S architectures for high‐energy, manufacturable ...
Hyeona Park +11 more
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Results in Applied MathematicsIn this paper, we consider a class of mixed type Hilfer fractional differential equations with noninstantaneous impulses, nonlocal conditions and time delay.
Baoyan Han, Bo Zhu
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Mathematical Methods in the Applied Sciences, Volume 49, Issue 2, Page 521-530, 30 January 2026.ABSTRACT This paper investigates the generalized Hyers–Ulam stability of the Laplace equation subject to Neumann boundary conditions in the upper half‐space. Traditionally, Hyers–Ulam stability problems for differential equations are analyzed by examining the system's error, particularly in relation to a forcing term.
Dongseung Kang +2 more
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Stability of generalized Newton difference equations
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2012 In the paper we discuss a stability in the sense of the generalized Hyers-Ulam-Rassias for functional equations Δn(p, c)φ(x) = h(x), which is called generalized Newton difference equations, and give a sufficient condition of the generalized Hyers-Ulam ...
Wang Zhihua, Shi Yong-Guo
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