Allen Hatcher is a professor of mathematics at Cornell University. On his home page, he offers a link to download his book Algebraic Topology in its entirety. Published in 2002, the book is over 500 pages in length and is free to anyone wanting a personal copy. In addition to Algebraic Topology, there are three other books that are work-in-progress. Despite being incomplete, they could be useful...

Geometry and Topology is "a fully refereed international journal dealing with all aspects of geometry and topology and their applications." The publisher, Geometry & Topology Publications (GTP), is a non-profit organization based in the Mathematics Department of the University of Warwick at Coventry, UK. Visitors can browse the journal, available free of charge electronically, or search by keyword...

Cern has recently posted this new preprint. The publication is a report prepared for the European Committee for Future Accelerators (ECFA) containing an assessment and future plans for high performance computers in the field of lattice theory. Topics covered include hadronic spectroscopy, thermodynamics, quark masses, non-OCD physics, and algorithms and computing technology required for high...

From the New Jersey Networking Infrastructure in Education and the Stevens Institute of Technology, the Mathematics of Data Analysis page provides a succinct lesson for developing "the necessary skills need[ed] to effectively use graphing techniques to analyze a wide range of data." The instruction begins with finding the slope of a line, moves on to using data to find a slope, and finishes with...

Hosted by York University, with support from University of Florida, University of Tennessee at Martin, Nipissing University, York University, and the University of Milan, the Topology Atlas Website calls itself a publisher of information related to topology. The site amounts to a vast repository of documents for mathematicians and others interested in topology. A preprints section offers documents...