Math 225B: Differential Topology
Winter 2025
Syllabus
This is the second quarter of a year-long sequence in geometry
and topology.
Instructor: Ko Honda
Office: MS 7919
Office Hours: Mon 11-11:50am, Wed 2-2:50pm
E-mail: honda
at math dot ucla dot edu
URL: http://www.math.ucla.edu/~honda
TA: Harahm
Park; office hours Tu 4-5pm, Th 12-1pm; harahmpark at
math dot ucla dot edu
Class Meetings
- Lectures:
MWF 12pm - 12:50pm, Location: MS 5203
- Discussion: Tu 12pm - 12:50pm,
Location MS 5203
Topics
- Differential forms: tensor and exterior
algebra, exterior differentiation, and Lie derivatives.
- Integration: Stokes' theorem, de Rham
cohomology, and computations using Meyer-Vietoris sequences
- Sard's theorem and transversality.
- Oriented intersection theory, degree,
Lefschetz fixed point theorem.
- Poincaré duality, Thom isomorphism,
Pontryagin-Thom theory
Prerequisites
- Knowledge of basic manifold theory (e.g., Math
225A)
Homework
There will be weekly problem sets; see the class
schedule. Homework is due on Mondays, although there
may be some exceptional weeks. The problem sets count for
a large percentage of your total grade (approximately
70%). You may work with others or consult other textbooks,
but the homework you turn in must be
written by you, in your own words, and you must cite your
sources used and your collaborators!
Final examination
There will be a take-home
final. This will be approximately 30% of your final grade.
References
For the differential forms part of the course, I will follow my Differential Geometry Course Notes.
- Differential
Geometry Course Notes
- Lee, Introduction to Smooth Manifolds
- Spivak, A Comprehensive
Introduction to Differential Geometry
- Tu, An Introduction
to Manifolds
- Warner, Foundations of Differentiable Manifolds and Lie
Groups
- Peter
Petersen's notes
For the differential topology portion of the course:
- Guillemin & Pollack, Differential
Topology,
- Milnor, Topology from the
Differentiable Viewpoint.
For Poincaré duality and the Thom isomorphism:
- Bott & Tu, Differential Forms
in Algebraic Topology.
WARNING: The course syllabus provides a general plan for
the course; deviations may become necessary.
Last modified: February 5, 2025. |