Results 31 to 40 of about 4,563,831 (252)

On Approximate Solutions of Functional Equations in Vector Lattices

open access: yesAbstract and Applied Analysis, 2014
We provide a method of approximation of approximate solutions of functional equations in the class of functions acting into a Riesz space (algebra). The main aim of the paper is to provide a general theorem that can act as a tool applicable to a possibly
Bogdan Batko
doaj   +1 more source

A General Uniqueness Theorem concerning the Stability of Additive and Quadratic Functional Equations

open access: yesJournal of Function Spaces, 2015
We prove a general uniqueness theorem that can be easily applied to the (generalized) Hyers-Ulam stability of the Cauchy additive functional equation, the quadratic functional equation, and the quadratic-additive type functional equations.
Yang-Hi Lee, Soon-Mo Jung
doaj   +1 more source

Cauchy′s functional equation in restricted complex domains [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
Using a method modified from that used by Pisot and Schoenberg in 1964‐1965, a Cauchy′s functional equation with restricted domains in the complex field is solved for uniformly continuous solutions.
Watcharapon Pimsert   +2 more
openaire   +3 more sources

On the stability of a Cauchy type functional equation

open access: yesDemonstratio Mathematica, 2018
In this work, the Hyers-Ulam type stability and the hyperstability of the functional equationare proved.
Lee Jung Rye   +3 more
doaj   +1 more source

Stability of Cauchy\u27s equation on Δ+. [PDF]

open access: yes, 2023
The most famous functional equation f(x+y)=f(x)+f(y) known as Cauchy\u27s equation due to its appearance in the seminal analysis text Cours d\u27Analyse (Cauchy 1821), was used to understand fundamental aspects of the real numbers and the importance of ...
Wells, Holden
core   +1 more source

Programmable Variable‐Stiffness Multilayer Elastomer Composites With High‐Aspect‐Ratio Low‐Melting‐Point Alloy Inclusions

open access: yesAdvanced Materials Technologies, EarlyView.
High‐aspect‐ratio low‐melting‐point alloy inclusions are embedded within multilayer silicone laminates to create thermally programmable stiffness. Sequential activation of alloy‐rich layers produces four distinct mechanical states and reconfigures tendon‐driven actuator trajectories under the same load.
Palpolage Don Shehan Hiroshan Gunawardane   +4 more
wiley   +1 more source

The Cauchy-Riemann Differential Equations of Complex Functions [PDF]

open access: yesFormalized Mathematics, 2009
Summary. In this article we prove Cauchy-Riemann dierential equations of complex functions. These theorems give necessary and sucient condition for dierentiable function.
Hiroshi Yamazaki   +3 more
openaire   +3 more sources

Sustainable Materials Design With Multi‐Modal Artificial Intelligence

open access: yesAdvanced Science, EarlyView.
Critical mineral scarcity, high embodied carbon, and persistent pollution from materials processing intensify the need for sustainable materials design. This review frames the problem as multi‐objective optimization under heterogeneous, high‐dimensional evidence and highlights multi‐modal AI as an enabling pathway.
Tianyi Xu   +8 more
wiley   +1 more source

A Fixed Point Approach to the Stability of Quadratic Functional Equation with Involution

open access: yesFixed Point Theory and Applications, 2008
Cădariu and Radu applied the fixed point method to the investigation of Cauchy and Jensen functional equations. In this paper, we will adopt the idea of Cădariu and Radu to prove the Hyers-Ulam-Rassias stability of the quadratic functional equation
Zoon-Hee Lee, Soon-Mo Jung
doaj   +2 more sources

Functional Inequalities Associated with Cauchy Additive Functional Equation in Non-Archimedean Spaces

open access: yesDiscrete Dynamics in Nature and Society, 2011
We investigate the generalized Hyers-Ulam stability of the functional inequalities ∥f((x+y+z)/4)+f((3x−y−4z)/4)+f((4x+3z)/4)∥≤∥2f(x)∥ and ∥f((y−x)/3)+f((x−3z)/3)+f((3x+3z−y)/3)∥≤∥f(x)∥ in non-Archimedean normed spaces in the spirit of the Th. M.
A. Ebadian   +3 more
doaj   +1 more source

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