3 citations · 4 across the 6 of their papers we have counts for
6 papers
Moment functions of higher rank on polynomial hypergroups
Żywilla Fechner, Eszter Gselmann, László Székelyhidi
In this paper we consider generalized moment functions of higher order. These functions are closely related to the well-known functions of binomial type which have been investigate…
Endomorphisms and derivations of the measure algebra of commutative hypergroups
Zywilla Fechner, Eszter Gselmann, László Székelyhidi
Endomorphisms of the measure algebra of commutative hypergroups are investigated. We focus on derivations and higher order derivations which are closely related to moment function…
Spherical spectral synthesis
László Székelyhidi
In this paper we make an attempt to extend L. Schwartz's classical result on spectral synthesis to several dimensions. Due to counterexamples of D. I. Gurevich this is impossible f…
Montel-type theorems for exponential polynomials
J. M. Almira, L. Székelyhidi
In this paper we characterize local exponential monomials and polynomials on different types of Abelian groups and we prove Montel-type theorems for these function classes.
Characterization of Classes of Polynomial Functions
J. M. Almira, L. Székelyhidi
In this paper some classes of local polynomial functions on abelian groups are characterized by the properties of their variety. For this characterization we introduce a numerical…
Local polynomials and the Montel Theorem
J. M. Almira, L. Székelyhidi
In this paper local polynomials on Abelian groups are characterized by a "local" Fréchet-type functional equation. We apply our result to generalize Montel's Theorem and to obtain…