Course Description
This is the second part of the two-course series on algebraic topology. Topics include basic homotopy theory, obstruction theory, classifying spaces, spectral sequences, characteristic classes, and Steenrod operations.
Course Info
Instructor
Departments
Topics
Learning Resource Types
notes
Lecture Notes
assignment
Problem Sets
![Three spheres made up of circles.](/courses/18-906-algebraic-topology-ii-spring-2020/dcced4a09bccf2620e2522bf6b1b3d26_18-906s17.jpg)
The Hopf fibration shows how the three-sphere can be built by a collection of circles parametrized by points on a two-sphere. This is a frame from an animation of fibers in the Hopf fibration over various points on the two-sphere. (Image and animation courtesy of Niles Johnson.)