This page is http://www.math.columbia.edu/~bayer/F08/ModernAlgebra/notes
What follows are scans of my notes in preparation for class, for the private use of my students. They are not intended to be read independently of class; I am posting them solely as a convenience for my students. They are not necessarily complete, corrected or in any logical sequence, so they are likely to only be of use to students who also attended class and have their own notes for comparison.