3 papers
math.AP2020
Evolutionary Equations
Christian Seifert, Sascha Trostorff, Marcus Waurick
This is the final version of the lecture notes of the 23rd Internet Seminar on Evolutionary Equations, see also https://www.mat.tuhh.de/isem23/.
math.FA2019
On the harmonic extension approach to fractional powers in Banach spaces
Jan Meichsner, Christian Seifert
We show that fractional powers of general sectorial operators on Banach spaces can be obtained by the harmonic extension approach. Moreover, for the corresponding second order ordi…
math-ph2017
The linearized Korteweg-de-Vries equa- tion on general metric graphs
Christian Seifert
We consider the linearized Korteweg-de-Vries equa- tions, sometimes called Airy equation, on general metric graphs with edge lengths bounded away from zero. We show that pro- perti…