Book Projects AlgebraicTopology This book, published in 2002, is a beginning graduate-level textbook on algebraictopology from a fairly classical point of view. To find out more or to download it in electronic form, follow this link to the download page.
This unfinished book is intended to be a fairly short introduction to topological K-theory, starting with the necessary background material on vector bundles and including also basic material on characteristic classes. For further information or to download the part of the book that is written, go to the download page.
This is an undergraduate-level introduction to elementary numbertheory from a somewhat geometric point of view, focusing on quadratic forms in two variables with integer coefficients. See the webpage for the book for more information or to download an electronic version of the book. A print version has been published by the American Math Society in 2022, but the electronic version will remain freely available here. 2b1af7f3a8