Upcoming talks

TBA

Previous talks

2025

Existence and analytic behavior of Jost solutions for Schrödinger operators on the Discrete Line with varying spectral multiplicity

at The Americas-Europe Conference in Ciudad de México, México

youtube.com/watch?v=rDTbWOXZePI 

A Levinson-type Theorem for Scattering Matrices with Varying Dimension for Schrödinger Operators on the Discrete Line

at the Math4Q Conference in Mérida, Mexico

youtube.com/watch?v=uv0t5j9zlQg 

Outgoing monotone geodesics of standard subspaces

at the Lie-Group seminar of the Friedrich-Alexander-University Erlangen-Nürnberg, Germany

Stationary Scattering Theory with Varying Spectral Multiplicity on the Discrete Line

at the mathematical physics seminar of the TU Braunschweig, Germany

2024

The scattering matrix and a Levinson Theorem for a class of matrix-valued discrete Schrödinger operators

at the Lie-Group seminar of the Friedrich-Alexander-University Erlangen-Nürnberg, Germany

One-parameter semigroups of unitary endomorphisms of standard subspaces and reflection positivity

at the conference CUWB-III: Differential and difference equations in models of physics and biology

youtube.com/watch?v=RR1BeUHpUMk 

2023

Standard subspaces, reflection positivity, Pick functions and how to pass from one to the other

at the Lie-Group seminar of the Friedrich-Alexander-University Erlangen-Nürnberg, Germany

2022

One-parameter semigroups of unitary endomorphisms of standard subspaces

at the Lie-Group seminar of the Friedrich-Alexander-University Erlangen-Nürnberg, Germany

2021

Reflection positivity and unimodular symbols for positive Hankel operators

at the Lie-Group seminar of the Friedrich-Alexander-University Erlangen-Nürnberg, Germany

Pick functions and an application to Hankel operators on Hardy spaces

at the Lie-Group seminar of the Friedrich-Alexander-University Erlangen-Nürnberg, Germany