Stability of Quadratic and Drygas Functional Equations, with an Application for Solving an Alternative Quadratic Equation

Gian Luigi Forti ()
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Gian Luigi Forti: Università degli Studi di Milano

A chapter in Handbook of Functional Equations, 2014, pp 155-179 from Springer

Abstract: Abstract The aim of this survey is to present stability results obtained in the last years (roughly after 1995) for the quadratic equation and its various generalizations, and the Drygas equation. The number of papers on this subject is very high, hence, the author of the present chapter made a (quite arbitrary) choice of some of them to be shown in detail. The last section is devoted to an application of stability for solving an alternative form of the quadratic equation.

Keywords: Ulam–Hyers stability; Quadratic equation; Drygas equation; Alternative quadratic equation (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1007/978-1-4939-1286-5_8

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