FB 6 Mathematik/Informatik

Institut für Mathematik

Navigation und Suche der Universität Osnabrück




Oberseminar Angewandte Analysis

Oberseminar Stochastik

Oberseminar Algebra

27.06.2017 um 16:15 Uhr in 69/125:

Mario Kummer (Max-Planck-Institut, Leipzig)

Separating Morphisms from Real Algebraic Curves

Given a real algebraic curve we consider the set of all morphisms to the projective line with the property that the preimage of every real point consists entirely of real points. It turns out that this generalises the notion of interlacing polynomials on the real line to projective curves. Using this theory, we will answer a question raised by Shamovich and Vinnikov on hyperbolic curves as well as a question by Fiedler-LeTouzé on totally real pencils on plane curves. This is joint work with Kristin Shaw.

Kollegseminar „Kombinatorische Strukturen in der Geometrie“

Oberseminar Topologie

27.06.2017 um 14:15 Uhr in 69/E15:

Manfred Stelzer (Universität Osnabrück)

Atiyah-Hitchin Schemes, Complex Realization

29.06.2017 um 12:15 Uhr in 69/117:

Dr. Jin Cao (Tsinghua University, China)

Cdgas over a reductive group

In the talk, I will introduce the general theory of cdgas over some reductive group.