MATH 443
Frank Adams 19301989. More pictures
Leonhard Euler 17071783.
More pictures.
Euler is also depicted on an old version of the
Swiss 10 franc note.
Jules Henri Poincaré 18541912. More pictures.
Daniel Kan 19272013
Solomon Lefschetz 18841972
Heinz Hopf 18911971.
J. H. C. Whitehead 19041960
Norman Earl Steenrod 19101971
Samuel Eilenberg 19131998
Instructor Information

 Doug Ravenel
 Office hours: Friday 2:004:00 on Zoom or by appointment
 No office hours on October 14 due to travel
Class meetings

MW 2:003:15 in Hylan 1104.
Zoom link 
The first meeting will be on Wednesday August 31.

There will be no class on Monday September 5 (Labor Day).

The final exam will be on TBA
Handouts

Doug’s Kervaire invariant page. Includes link to the purple book, Equivariant stable homotopy theory and the Kervaire invariant, with Mike Hill and Mike Hopkins.

Answer sheet for Fall 2017 final exam. Note to self: this exam was TOO EASY.

Algebraic topology by Allen Hatcher, our textbook.
Links

The doubletipping null homotopy by David Pengelley and Daniel Ramras. A detailed explanation of the coffee cup and belt tricks, with links to a paper and several videos.

HOMOTOPY THEORY FOR BEGINNERS (comments to Chapter 0 of Hatcher’s book)

THE FUNDAMENTAL GROUP AND COVERING SPACES and From singular chains to Alexander Duality by JESPER M. MØLLER.

Math That Makes You Go Wow: A MultiDisciplinary Exploration of NonOrientable Surfaces Undergraduate math appreciation course at Yale, 1998.

The Hopf fibration The discovery of this map by Heinz Hopf in 1930 marks the beginning of homotopy theory.

Miscellany Other cool links not in the above categories.