Differential Geometry II Spring 2024

Lecturer
Peter Hintz
Coordinator
Matilde Gianocca
Lectures
Mo 14:15-16:00, HG G5
Do 10:15-12:00, CAB G11

Content

This is a continuation course of Differential Geometry I. Topics covered include:
Introduction to Riemannian geometry: Riemannian manifolds, Levi-Civita connection, geodesics, Hopf-Rinow Theorem, curvature, second fundamental form, Riemannian submersions and coverings, Hadamard-Cartan Theorem, triangle and volume comparison.

Lecture Notes

Handwritten notes from the lectures are available here.

Lectures

Week Date Topics
1 19.02 Introduction, Riemannian metrics
22.02 vector and tensor bundles (1.3)
2 26.02. length and volumes (2.1, 2.2), connections on vector bundles (3: intro)
29.02. Levi-Civita connection, vector fields along maps (3.1)
3 04.03 parallel transport (3.2), first variation of length (3.3), geodesics (beginning of 4)
07.03. Gauss lemma, local length minimization of geodesics (4.1)
4 11.03 Hopf-Rinow theorem (4.2)
14.03. Riemann curvature tensor(5.1)
5 18.03 Sectional curvature (5.2), Contractions (5.3)
21.03. Contractions (5.3, continued), operations on tensors II (5.4)
6 25.03 Second Bianchi identity and applications (5.4)
28.03. Curvature of submanifolds (5.5), second variation of length (6.1)
7 8.04 Jacobi fields (6.1)
11.04 .Conjugate points (6.1), second variation of length (6.2)
8 18.04 Synge's Theorem (6.3), space forms (beginning of 7)
9 22.04 Covering maps (7.1)
25.04 End of covering maps (7.1), Proof of Killing-Hopf Theorem (7.2,7.3)

Exercises

Every week a new exercise sheet will be uploaded. You will can submit your solutions using the SAM Up Tool here. (Can only be done when connected to the ETH-network).

The first exercise classes will take place in the second week, on Fr 01.03.

exercise sheet due by solutions
Sheet 1 March 1 Solution 1
Sheet 2 March 8 Solution 2
Sheet 3 March 15 Solution 3
Sheet 4 March 22 Solution 4
Sheet 5 March 29 Solution 5
Sheet 6 April 12 Solution 6
Sheet 7 April 19 Solution 7
Sheet 8 April 26
Sheet 9 May 3

Exercise classes

timeroomassistant
Fr 10-11HG D 5.2Enric Florit-Simon and Gerard Orriols
Fr 11-12HG D 5.2office hour

Literature