Ulrich Abel

activity

20242026

collaborators

Showing math.NAShow all

2 papers · 1 filter

math.NA2026

Korovkin type theorems for operators acting on functions of polynomial and exponential growth on $[0, \infty)$

Ulrich Abel, Ana-Maria Acu, Margareta Heilmann +1

We prove two Korovkin-type approximation theorems for sequences of positive linear operators acting on continuous functions on $[0, \infty)$ . Under the assumption of pointwise conve…

math.NA2024

Commutativity and spectral properties for a general class of Szasz-Mirakjan-Durrmeyer operators

Ulrich Abel, Ana Maria Acu, Margareta Heilmann +1

In this paper we present commutativity results for a general class of Szasz-Mirakjan-Durrmeyer type operators and associated differential operators and investigate their eigenfunct…

Korovkin type theorems for operators acting on functions of polynomial and exponential growth on [0,∞)

Commutativity and spectral properties for a general class of Szasz-Mirakjan-Durrmeyer operators

Korovkin type theorems for operators acting on functions of polynomial and exponential growth on $[0, \infty)$