Anisotropic minimal graphs with free boundary
Dienstag, 4.11.25, 16:15-17:45, Seminarraum 125
Minimal surface equation is a classical topic in Geometric Analysis and PDEs. In this talk, we discuss recent progress on anisotropic minimal surface equation, and prove the following Liouville-type theorem: any anisotropic minimal graph with free boundary in the half-space must be flat, provided that the graph function has at most one-side linear growth. This is a joint work with Guofang Wang, Wei Wei, and Chao Xia.
Recent Developments in Namba Forcing
Donnerstag, 6.11.25, 15:00-16:30, Hörsaal 2
I will discuss work done in Freiburg on a technique called Namba forcing. This technique was originally used by Namba and Bukovsky to, in essence, demonstrate certain differences between the cardinals \(\aleph_0\), \(\aleph_1\), and \(\aleph_2\). I found an argument for what is called ``the weak approximation property,'' which, in the context of forcing, means that certain functions are not added in the extension. In joint work with Heike Mildenberger and with Hannes Jakob, this led to the resolution of some longstanding open questions in PCF theory, which concerns the study of singular cardinals. With a similar argument I solved an old question about the minimality of forcing extensions. The talk is not meant to be technical, but rather an overview of what is happening in the area.
tba
Montag, 24.11.25, 16:15-17:45, Seminarraum 404
How to grasp Emmy Noether’s approach to mathematics (and physics)
Donnerstag, 27.11.25, 15:00-16:30, Hörsaal 2