7 citations · 14 across the 10 of their papers we have counts for
12 papers
Adjoint Pairs and Unbounded Normal Operators
Konrad Schmüdgen
An adjoint pair is a pair of densely defined linear operators on a Hilbert space such that for $x\in \cD(A), y \in \cD(B).$ We cons…
Balanced Operators and Operator Domains
Konrad Schmüdgen
We shall say that a densely defined closed operator on a Hilbert space is balanced if $\cD(T)=\cD(T^*)$. Balanced operators are described in terms of their phase operators abnd…
On the multidimensional K-moment problem
Konrad Schmüdgen
We prove a solvability theorem for the Stieltjes moment problem on which is based on the multivariate Stieltjes condition , $j=1…
Ten Lectures on the Moment Problem
Konrad Schmüdgen
These are ten lectures on the moment problem delivered by the author at the Vietnam Institute of Advanced Studies in Mathematics, Hanoi, March 2019. The first 3 lectures are about…
The multidimensional truncated Moment Problem: The Moment Cone
Philipp J. di Dio, Konrad Schmüdgen
Let , , be measurable functions on a measurable space . If is a positive measure on $(\mathcal{X},\mat…
Some Remarks on the Operator T^*T
Fritz Gesztesy, Konrad Schmüdgen
This note deals with the operator , where is a densely defined operator on a complex Hilbert space. We reprove a recent result of Z. Sebestyén and Zs. Tarcsay [13]: If $T…