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math.CA2020
The global symmetry group of first order differential equations and the global rectification theorem
Eszter Gselmann, Gábor Horváth
Symmetry analysis can provide a suitable change of variables, i.e., in geometric terms, a suitable diffeomorphism that simplifies the given direction field, which can help signific…
math.CA2019
On a class of linear functional equations without range condition
Eszter Gselmann, Gergely Kiss, Csaba Vincze
The main purpose of this work is to provide the general solutions of a class of linear functional equations. Let be an arbitrarily fixed integer, let further and …