91 citations · 244 across the 32 of their papers we have counts for
5 papers · 1 filter
Boundary triplets for skew-symmetric operators and the generation of strongly continuous semigroups
Sven-Ake Wegner
We give a self-contained and streamlined exposition of a generation theorem for C0-semigroups based on the method of boundary triplets. We apply this theorem to port-Hamiltonian sy…
The heart of the Banach spaces
Sven-Ake Wegner
Consider an exact category in the sense of Quillen. Assume that in this category every morphism has a kernel and that every kernel is an inflation. In their seminal 1982 paper, Bei…
Pivot duality of universal interpolation and extrapolation spaces
Christian Bargetz, Sven-Ake Wegner
It is a widely used method, for instance in perturbation theory, to associate with a given C0-semigroup its so-called interpolation and extrapolation spaces. In the model case of t…
A workshop for high school students on naive set theory
Sven-Ake Wegner
In this article we present the prototype of a workshop on naive set theory designed for high school students in or around the seventh year of primary education. Our concept is base…
An open day in the metric space
Sven-Ake Wegner, Katrin Rolka
We report on a workshop for grade eleven high school students, which took place in the framework of a university open day. During the workshop the participants first discovered the…