73 citations · 119 across the 38 of their papers we have counts for
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math.CA2016★ 2 cited
Approximate derivations of order
Eszter Gselmann
The aim of this paper is to prove characterization theorems for higher order derivations. Among others we prove that the system defining higher order derivations is stable. Further…
math.CA2016
Stability in the class of first order delay differential equations
Eszter Gselmann, Anna Kelemen
The main aim of this paper is the investigation of the stability problem for ordinary delay differential equations. More precisely, we would like to study the following problem. As…
math.CA2016★ 3 cited
Stability of the entropy equation
Eszter Gselmann
In this paper we prove that the so--called entropy equation, i.e., \[ H\left(x, y, z\right)=H\left(x+y, 0, z\right)+H\left(x, y, 0\right) \] is stable in the sense of Hyers and Ula…