AbstractEach surjective derivation on the algebra of formal power series can be given in a simple form. An operator on the vector space of polynomials in a single variable is constructed such that the Sheffer polynomials are its eigenvectors; furthermore, some known examples are quoted
The aim of this paper is to develop foundations of umbral calculus on the space $\mathcal D'$ of di...
AbstractLet F=(F1,F2,…,Fn) be an n-tuple of formal power series in n variables of the form F(z)=z+O(...
AbstractWe show that the cyclic derivative of any algebraic formal power series in noncommuting vari...
AbstractEach surjective derivation on the algebra of formal power series can be given in a simple fo...
AbstractThe well-known relationship between linear functionals and Sheffer sequences is extended to ...
AbstractAn unexpected connection between a certain class of exponential approximation operators and ...
In this paper we introduce a class of positive linear operators by using the "umbral calculus", and...
AbstractIn this paper, we shall generalize our previous results [1] to the case of series expansion ...
AbstractPolynomial solutions to systems of first order delta operator equations are well known, and ...
AbstractIn this paper, using the production matrix of an exponential Riordan array [g(t),f(t)], we g...
In this paper we discuss a kind of symbolic operator method by making use of the defined Sheffer-typ...
Summary. In this paper we define the algebra of formal power series and the algebra of polynomials o...
AbstractTo count over some oriented graphs a class of combinatorial numbers is introduced. Their exp...
This paper is a brief survey of the research conducted by the author and his collaborators in the fi...
AbstractThis paper is concerned with the ring A of all complex formal power series and the group G o...
The aim of this paper is to develop foundations of umbral calculus on the space $\mathcal D'$ of di...
AbstractLet F=(F1,F2,…,Fn) be an n-tuple of formal power series in n variables of the form F(z)=z+O(...
AbstractWe show that the cyclic derivative of any algebraic formal power series in noncommuting vari...
AbstractEach surjective derivation on the algebra of formal power series can be given in a simple fo...
AbstractThe well-known relationship between linear functionals and Sheffer sequences is extended to ...
AbstractAn unexpected connection between a certain class of exponential approximation operators and ...
In this paper we introduce a class of positive linear operators by using the "umbral calculus", and...
AbstractIn this paper, we shall generalize our previous results [1] to the case of series expansion ...
AbstractPolynomial solutions to systems of first order delta operator equations are well known, and ...
AbstractIn this paper, using the production matrix of an exponential Riordan array [g(t),f(t)], we g...
In this paper we discuss a kind of symbolic operator method by making use of the defined Sheffer-typ...
Summary. In this paper we define the algebra of formal power series and the algebra of polynomials o...
AbstractTo count over some oriented graphs a class of combinatorial numbers is introduced. Their exp...
This paper is a brief survey of the research conducted by the author and his collaborators in the fi...
AbstractThis paper is concerned with the ring A of all complex formal power series and the group G o...
The aim of this paper is to develop foundations of umbral calculus on the space $\mathcal D'$ of di...
AbstractLet F=(F1,F2,…,Fn) be an n-tuple of formal power series in n variables of the form F(z)=z+O(...
AbstractWe show that the cyclic derivative of any algebraic formal power series in noncommuting vari...
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