L. Klotz

collaborators

3 papers

math.FA2017

Duality results for a general trigonometric approximation problem

Lutz Klotz, Conrad Mädler

Let $α \in (1, \infty)$ and $μ$ be a regular finite Borel measure on a locally compact abelian group. The paper deals with a general trigonometric approximation problem in $L^{α} (μ)$ , w…

math.FA2017

H-Regular Borel measures on locally compact abelian groups

Lutz Peter Klotz, Juan Miguel Medina

Let $G$ be an LCA group, $H$ a closed subgroup, $Γ$ the dual group of $G$ . In accordance with analogous notions in prediction theory the classes of $H$ -regular and $H$ -sing…

math.FA2017

Density of spaces of trigonometric polynomials with frequencies from a subgroup in $L^{α}$ -spaces

Juan Miguel Medina, Lutz Peter Klotz, Manfred Riedel

Let $G$ be an LCA group, $H$ a closed subgroup, $Γ$ the dual group of $G$ and $μ$ be a regular finite non-negative Borel measure on $Γ$ . We give some necessary and…

Duality results for a general trigonometric approximation problem

H-Regular Borel measures on locally compact abelian groups

Density of spaces of trigonometric polynomials with frequencies from a subgroup in Lα-spaces

Density of spaces of trigonometric polynomials with frequencies from a subgroup in $L^{α}$ -spaces