Results 91 to 100 of about 1,144 (174)

Approximate mixed type additive and quartic functional equation

Boletim da Sociedade Paranaense de Matemática, 2017
In the current work, we introduce a general form of a mixed additive and quartic functional equation. We determine all solutions of this functional equation. We also establish the generalized Hyers-Ulam stability of this new functional equation in quasi-$\beta$-normed spaces.
openaire   +4 more sources

Wavefunctions and wavefunctionals in complex configuration space [PDF]

, 2007
We show how to evaluate divergent asymptotic series using a modified Borei resummation method. We develop and test this technique using three different perturbative expansions of the anharmonic oscillator.
Leonard, David
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Stability of a mixed type additive and quartic functional equation

Filomat, 2014
In this paper we obtain the general solution of a mixed additive and quartic functional equation. We also prove the Hyers-Ulam stability of this functional equation in random normed spaces.
openaire   +2 more sources

Stability of general A-quartic functional equations in non-Archimedean Intuitionistic fuzzy normed spaces

, 2019
The aim of this article is to study the Hyers-Ulam-Rassias stability and generalized Hyers-Ulam-Rassias stability in non-Archimedean Intuitionistic fuzzy normed spaces.
Rassias, J.M., Dutta, H., Pasupathi, N.
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Stability of generalized cubic- and quartic-type functional equations in the setting of non-Archimedean spaces

Journal of Taibah University for Science
In the field of functional equations and their solutions, Ulam's stability is an essential concept. This theory examines whether the function approximating a certain functional equation is close to the function that exactly satisfies it.
Ramakrishnan Kalaichelvan, Uma Jayaraman, Gunaseelan Mani, Sabri T.M. Thabet, Imed Kedim, Thabet Abdeljawad   +5 more
doaj   +1 more source

On the Stability of Cubic Mappings and Quadratic Mappings in Random Normed Spaces

Journal of Inequalities and Applications, 2009
Recently, the stability of the cubic functional equation f(2x+y)+f(2x−y)=2f(x+y)+2f(x−y)+12f(x) in fuzzy normed spaces was proved in earlier work; and the stability of the additive functional equations f(x+y)=f(x)+f(y), 2f((x+y)/2)=f(x)+f(y)
doaj   +1 more source

The Ulam stability of Jensen-Quartic functional equation [PDF]

Proceedings of the 2016 6th International Conference on Machinery, Materials, Environment, Biotechnology and Computer, 2016
Zhenhua Zhang, Aimin Song
openaire   +1 more source

On the Stability of Cubic Mappings and Quadratic Mappings in Random Normed Spaces

Journal of Inequalities and Applications, 2008
Recently, the stability of the cubic functional equation in fuzzy normed spaces was proved in earlier work; and the stability of the additive functional equations , in random normed spaces was proved as well. In this paper, we prove the stability of
Cho YJ, Saadati R, Vaezpour SM, Jalili M, Baktash E   +4 more
doaj  

Self-consistent phonon calculations and quartic anharmonic lattice thermal conductivity in 2D InS monolayer

AIP Advances
Low lattice thermal conductivity (κl) is a crucial factor for higher figure-of merit and hence the efficiency of thermoelectric generators. There are several reports on intrinsically low κl values in two-dimensional (2D) van der Waals materials using ...
Eesha Andharia, Hind Alqurashi, Abhiyan Pandit, Bothina Hamad   +3 more
doaj   +1 more source

A generalized mixed quadratic-quartic functional equation

, 2012
In this paper, we determine the general solution of the functional equation f (kx+y)+ f ...
Husna Zayadi
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