Rupert L. Frank

collaborators

2 papers

math.AP2017

Extremizers for the Airy-Strichartz inequality

Rupert L. Frank, Julien Sabin, Rupert Frank

We identify the compactness threshold for optimizing sequences of the Airy-- Strichartz inequality as an explicit multiple of the sharp constant in the Strichartz inequality. In pa…

math.SP2014

Trace class conditions for functions of Schrödinger operators

Rupert L. Frank, Alexander Pushnitski

We consider the difference $f (- Δ + V) - f (- Δ)$ of functions of Schrödinger operators in $L^{2} (R^{d})$ and provide conditions under which this difference is trace class. We are par…