30 citations · 93 across the 17 of their papers we have counts for
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Domain Characterizations of Strong Commutativity\break of Unbounded Self-Adjoint Operators
Konrad Schmüdgen
Let and be unbounded self-adjoint operators on a Hilbert space. Suppose that there exists a dense linear subspace such that for $x \i…
The Quaternionic Moment Problem
R. Ben Taher, K. Schmüdgen, E. H. Zerouali
In this paper we develop an approach to the full quaternionic moment problem. We define a hierarchy , $k\in \mathbb{N}_…
Antilinar Normal Operators on Hilbert Space
Konrad Schmüdgen
An operator on a complex Hilbert space $\Hh$ is called antilinear if and $A(λx)=\ovλ Ax$ for $x,y\in \cD(A)$ and $λ\in \dC$. We investigate some classes of dense…
On the Moment Functionals with Signed Representing Measures
Konrad Schmüdgen
Suppose that $\sA$ is a finitely generated commutative unital real algebra and is a closed subset of the set of characters of $\sA$. We study the following problem: W…
On the Matricial Truncated Moment Problem. II
Conrad Mädler, Konrad Schmüdgen
We continue the study of truncated matrix-valued moment problems begun in arXiv:2310.00957. Let . Suppose that is a measurable space an…
On the Truncated Matricial Moment Problem. I
Conrad Mädler, Konrad Schmüdgen
This paper is about the general truncated matrix-valued moment problem. Let denote the complex Hermitian -matrices, . Suppose that $(\ma…
The multidimensional truncated Moment Problem: Carathéodory Numbers
Philipp J. di Dio, Konrad Schmüdgen
Let be a finite-dimensional subspace of , where is a locally compact Hausdorff space, and a ba…
The multidimensional truncated Moment Problem: Atoms, Determinacy, and Core Variety
Philipp J. di Dio, Konrad Schmüdgen
This paper is about the moment problem on a finite-dimensional vector space of continuous functions. We investigate the structure of the convex cone of moment functionals (supporti…