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401-4532-20L 4 Credits MSC D-MATH

Introduction to 3-Manifolds

Lecturers & Examiners: Dr. Matthias Nagel
VVZ CR n/a

Last Updated: 2026-02-05 15:41:17

Abstract

This course provides an introduction to the basic notions and tools of geometric topology with a special focus on three dimensional manifolds.

Objective

In this course, we become familiar with the basic notions and tools of geometric topology, which concerns low-dimensional manifolds and their embeddings. We will focus on 3–dimensional manifolds. While this class of manifolds is very rich, it still allows for many structural results. An important goal of the lecture is to learn how to manipulate these manifolds: build them from simple pieces, cut them apart, isotope and simplify submanifolds etc. These techniques from differential topology are combined with invariants from algebraic topology, which are incredibly powerful in encoding properties of a 3–manifold. We discuss applications, which give new intuition for these invariants, and answer many questions about manifolds of dimension three or less. There are many synergies with Algebraic Topology II, which I encourage you to take in parallel.

Content

Background in differential topology Foundational results on the topology of 3–manifolds Knots and concordance

Resources

Literature

Knots and links by D. Rolfsen 3–Manifolds by J. Hempel Differential topology by T. Bröcker and K. Jänich

General Information

Language
English
Levels
MSC

Examination

Type
session examination
Mode
oral 30 minutes
BITTE BEACHTEN: Die mündliche Prüfung dauert 20 MINUTEN pro Kandidat. Aus technischen Gründen werden im Vorlesungsverzeichnis 30 Minuten pro Kandidat publiziert.PLEASE NOTE: The oral examination takes 20 minutes per candidate. For technical reasons, 30 minutes per candidate are published in the course catalogue.

Course Components

Type Title Time & Place Hours
lecture Introduction to 3-Manifolds
  • Fri 11:15-13:00 (HG G 26.5)
2 h weekly

Offered In