Algebra and Topology Seminar

On Monday 4/5/26, 11.30-12.30, in M2 and online, Konstantinos Kartas (University of Münster) will give a talk entitled:

Tame Banach rings

Abstract: The almost purity theorem is a foundational result in perfectoid geometry which, as the name suggests, holds only in an “almost” sense. We aim to identify a class of rings for which the theorem holds in a genuine (non-almost) form. To this end, we introduce the notion of a tame Banach ring, extending the earlier notion of a tame field, and prove that these rings satisfy the desired property for Galois covers of p-power degree. Joint work in progress with Franziska Jahnke.

https://authgr.zoom.us/j/96179136945?pwd=dTRtbmtRbGlkaUhYSDhISXFmREhGQT09
Meeting ID: 961 7913 6945
Passcode: 640861