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Fakultät für Mathematik Universität Regensburg
Differential Cohomology
Semester
SoSe 2024

Lecturer
Ulrich Bunke

Type of course (Veranstaltungsart)
Vorlesung

German title
Differentielle Kohomologie

Contents
Differential cohomology combines deRham cohomology with a generalized cohomology theory with the
aim to capture characteristic classes together with their deRham representatives in a common
object. In this course I will give an overview on the field starting with classical constructions
(like Chern-Weyl theory, Cheever-Simons classes ...) and ending with the modern homotopy theoretic
point of view initiated by the work of Hopkins-Singer. A will show how differential cohomology ideas
can be used to construct secondary invariants for manifolds and geometric vector bundles. Further
applications are construction of regulators for algebraic K-Theory and the formulation of secondary
index theorems.

Literature
much of the material is contained in <A href="https://arxiv.org/abs/1208.3961">pdf
</A>

Recommended previous knowledge
- language of infinity categories - algebraic topology (generalized homology and cohomology
theories) - differential geometry (manifolds, vector bundles, connections and curvature)

Time/Date
Do 14-16

Location
M103

Registration
  • Registration for course work/examination/ECTS: FlexNow
Examination (Prüfungsleistungen)
  • Oral exam: Duration: 30, Date: individual, re-exam: Date:
Modules
MV

ECTS
3