The main topics of this course are several basic concepts related to characteristic classes of vector bundles. After introducing several basic topics related to special homology theory, the instructor proves Thom isomorphism theorem, and defines the Euler class of oriented vector bundles. The instructor next introduces other characteristic classes, namely Stiefel-Whitney classes, Chern classes, and Pontryagin classes, covering their basic properties. The instructor finally touch on Cobordism theory and the Hirzebruch signature theorem.
Characteristic classes of vector bundles are a basic concept for topology and differential geometry. This is an introductory course on characteristic classes, and provides some background knowledge for studying cutting edge geometry. This course is a continuation of "Advanced Geometry A" (MTH.B401), held in the first quarter.
Students are expected to:
- Understand the principle of characteristic classes of vector bundles
- Understand the precise statement and importance of the Thom isomorphism theorem
- Be able to compute characteristic classes in easy cases
characteristic class, Thom isomorphism, Euler class
✔ Specialist skills | Intercultural skills | Communication skills | Critical thinking skills | Practical and/or problem-solving skills |
Standard lecture course
Course schedule | Required learning | |
---|---|---|
Class 1 | the concept of characteristic class | Details will be provided during each class session |
Class 2 | singular homology and cohomology | Details will be provided during each class session |
Class 3 | cup and cross products, excision theorem | Details will be provided during each class session |
Class 4 | the Thom isomorphism theorem, Thom class | Details will be provided during each class session |
Class 5 | Euler class, Gysin exact sequence | Details will be provided during each class session |
Class 6 | Stiefel-Whitney classes, existence of immersions of projective spaces into Euclidean spaces | Details will be provided during each class session |
Class 7 | Chern classes, Pontrjagin classes | Details will be provided during each class session |
Class 8 | cobordism theory, the Hirzebruch signature theorem | Details will be provided during each class session |
No textbook is set.
Ichiro Tamura, "Differential Topology", Iwanami Shoten, 1991, (in Japanese), ISBN-13: 978-4007302350
J. W. Milnor and J. D. Stasheff, "Characteristic Classes", Princeton Univ. Press, 1974, ISBN-13: 978-0691081229
Report submissions (100%)
Students require the following knowledge: topological space, smooth manifold, homology theory. Enrollment in "Advanced topics in Geometry A" (MTH.B401) is desirable.