

Book Projects:  
Course Notes:  
Papers  
Other Things: 
Book Projects 
Algebraic TopologyThis is the first in a planned series of three textbooks in algebraic topology having the goal of covering all the basics while remaining readable by newcomers seeing the subject for the first time. The first book contains the basic core material along with a number of optional topics of a relatively elementary nature. The second and third books are only partially written  see below. To find out more about the first book or to download it in electronic form, follow this link to the download page. 
Vector Bundles and KTheoryThe intention is for this to be a fairly short book focusing on topological Ktheory and containing also the necessary background material on vector bundles and characteristic classes. For further information, and to download the part of the book that is written, go to the download page. 
Spectral Sequences in Algebraic TopologyThis idea is for this to be a readable introduction to spectral sequences, with emphasis on their applications to algebraic topology. What is written so far is mostly about the Serre spectral sequence. For more details and to download what is written so far, go to the download page. Update: My current plan is to make this an extra chapter of the algebraic topology book when I make a second edition of that book, rather than have it be a separate book. 
Topology of NumbersThis is intended to be an undergraduate textbook presenting a somewhat geometricallyflavored introduction to elementary number theory. See the download page for more information and to get a pdf file of the part of the book that has been written so far. 
Papers 
Slides of Talks:
Preprints:
Papers published since 1996:
Updates of older papers:
Unfinished drafts:
Unpublished papers: