Differential Geometry 1 Summer 2023

Lecturer:
JProf. Peter Smillie
Office hours: Monday 11-12
Lectures: Mo, Fri 9-11, Hörsaal
Language of Instruction: English
Tutor:
Paula Heim
Exercise sessions: Wed 9-11, SR A
Valentina Disarlo
Müsli: Differentialgeometrie1
Module description (pdf)
Script (overleaf)
Script signup sheet (google doc)
MaMpf

Content

Topics: Manifolds, vector bundles, embeddings and submersions, integral curves and flows, basic Lie groups, differential forms and integration, Riemannian metrics, geodesics, connections, curvature.

Course goals: Learn the modern language of smooth manifolds; become comfortable performing calculations in Riemannian geometry in many concrete examples; understand how the local invariants of a Riemannian manifold constrain its global topology.

Recommended prerequisites: Analysis I and II (MA1, MA2) and Linear Algebra I and II (MA4, MA5)

Literature (English)

German resources

Exam

The second final exam is a written exam held on Friday, September 29 from 9:15 - 10:45 in room SR4 in the Mathematikon. The first final exam was a written exam held on Friday, July 28.

Exercises

Exercises are due on Friday by the beginning of class. They can be submitted on MaMpf. They should be sumbitted in groups of 3-5 people. Please include the name of every group member on the uploaded file. Write clearly in large letters in English.

Exersise sheet Due date
Exercise sheet 1 Friday, 28.04
Exercise sheet 2 Friday, 05.05
Week 3: no exercises
Exercise sheet 3 Friday, 19.05
Exercise sheet 4 Friday, 26.05
Week 6: no exercises
Exercise sheet 5 Friday, 09.06
Exercise sheet 6 Friday, 16.06
Exercise sheet 7 Monday, 26.06
Exercise sheet 8 Monday, 03.07
Exercise sheet 9 Friday, 14.07

Schedule of the lectures

Date Content Reference Notes
17.04 Course overview, definition of manifold. Guillemin-Pollack Ch. 1.1, Boothby Ch. 1 Handwritten notes
21.04 Inverse function theorem Guillemin-Pollack Ch. 1.2-3, Boothby Ch. 2 Handwritten notes
24.04 Abstract manifolds and quotients Boothby Ch. 3 Handwritten notes
28.04 Vector fields and flows Boothby Ch. 4 Handwritten notes
05.05 Vector fields and flows cont'd Boothby Ch. 4 Handwritten notes
08.05 Lie algebras and Lie groups Boothby Ch. 4, Lee (Smooth Manifold) Ch. 7 Handwritten notes
12.05 Derivations and Frobenius Boothby Ch. 4 Handwritten notes
15.05 Covectors and Riemannian metrics, isometry Boothby Ch. 5.1-3 Handwritten notes
19.05 Tensors and exterior algebra Boothby Ch 5.5-8 Handwritten notes
22.05 Tensor fields on manifolds Boothby Ch 5.5-8 Handwritten notes
26.05 Tensors and exterior algebra Boothby Ch 5.5-8 Handwritten notes
02.06 Orientation and integration Boothby Ch. 6.1-4, Lee Ch. 16.1-2, 16.5 Handwritten notes
05.06 Stokes theorem Boothby Ch. 6.1-5, Lee 16.3 Handwritten notes
09.06 Plane curves Do Carmo (Curves and Surfaces) Ch. 1 Handwritten notes
12.06 Space curves Do Carmo Ch. 1, Spivak (Vol 2) Ch. 1 Handwritten notes
14.06 The Gauss map, curvature of surfaces Do Carmo (Curves and Surfaces) Ch. 3 Handwritten notes
19.06 Connections and Theorem Egregium Do Carmo 4.3, Lee (Riemannian manifolds) ch. 4 Handwritten notes
23.06 The Levi-Civita connection Lee (R.M.) ch. 5.1-2 Handwritten notes
26.06 Geodesics, exponential map Lee (R.M.) Ch. 5-6, Do Carmo (C.S) Ch. 4.4-6 Handwritten notes
30.06 Metric spaces and the Hopf-Rinow theorem Lee (R.M) Ch. 6, Do Carmo (C.S) Ch. 3.3 Handwritten notes
03.07 The curvature tensor Lee (R.M) Ch. 7.1-2 Handwritten notes
07.07 The Gauss-Bonnet theorem Lee (R.M) Ch. 9, Do Carmo (C.S.) Ch. 4.5 Handwritten notes
10.07 Curvature and distance functions Lee (R.M) Ch. 9, Do Carmo (C.S.) Ch. 4.5 Handwritten notes
14.07 Symmetries of the curvature tensor Lee (R.M) Ch. 7.1-4 Handwritten notes
17.07 Jacobi fields and curvature of spaceforms Lee (R.M) Ch. 3.2-4, Ch. 10.1-2 Handwritten notes
19.07 Comparison theory Lee (R.M) Ch. 10.3-4, Ch. 11