Introduction to Algebraic Topology, Category Theory, Cohomology theories and Higher Dimensional Algebra, with Biographies.
Rights:
Open access,
GFDL,
http://en.wikipedia.org/wiki/User:Bci2/Books/Higher_Dimensional_Algebra
Copyright@2010 bci1 and Bci2, Edited and originated by Bci2- with several contributors listed before the License Statement by bci1 and Bci2:
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version ;published by the Free Software Foundation, with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in ;the section entitled "GNU Free Documentation License". Edited by Bci2, with all contributors listed before the License statement.
