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math.CA2020★ 8 cited
Moment functions on groups
Żywilla Fechner, Eszter Gselmann, László Székelyhidi
The main purpose of this work is to prove characterization theorems for generalized moment functions on groups. According one of the main results these are exponential polynomials…
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…