Directory: Top/Science/Math/Algebra

Abstract Algebra Online
Contains many of the definitions and theorems from the area of mathematics generally called abstract algebra. Intended for undergraduate students taking an abstract algebra class at the junior/senior level, as well as for students taking their first grad
http://www.math.niu.edu/~beachy/aaol/
Niu.edu ~ Site Info Whois Trace Route RBL Check

Intro to Abstract Algebra
Paul Garrett's detailed and comprehensive lecture notes in abstract algebra.
http://www.math.umn.edu/~garrett/m/intro_algebra/index.shtml
Umn.edu ~ Site Info Whois Trace Route RBL Check

Octonions and Sedenions
Enter the world of 8 and 16 dimensional hypercomplex numbers and discover that the laws that are taken for granted, but do not always hold true.
http://www.geocities.com/zerodivisor/
Geocities.com ~ Site Info Whois Trace Route RBL Check

IDA: Algebra Interactive
An HTML-based book by Arjeh M. Cohen, Hans Cuypers and Hans Sterk. It focuses on an algorithmic approach to algebraic structures. Many of these tools and examples use the computer algebra package GAP. Site has samples and errata.
http://www.win.tue.nl/~ida/
Tue.nl ~ Site Info Whois Trace Route RBL Check

Algebraic Areas of Mathematics
Topics include number theory, groups and sets, commutative rings, algebraic geometry, and linear algebra.
http://www.math.niu.edu/~rusin/known-math/index/tour_alg.html
Niu.edu ~ Site Info Whois Trace Route RBL Check

A Catalogue of Lattices
By Gabriele Nebe and Neil Sloane.
http://www.research.att.com/~njas/lattices/
Att.com ~ Site Info Whois Trace Route RBL Check

Abstract Algebra
Lecture notes by David Wilkins, Trinity College, Dublin. Topics in Number Theory; Group Theory; Galois Theory.
http://www.maths.tcd.ie/~dwilkins/Courses/311/
Tcd.ie ~ Site Info Whois Trace Route RBL Check

Center for Commutative Algebra
A site for the commutative algebra community, including news, conference and preprint announcements, and a huge list of algebraists.
http://www.commalg.org/
Commalg.org ~ Site Info Whois Trace Route RBL Check

Algebra Links
From Spartanburg County School District Two.
http://www.spartanburg2.k12.sc.us/links/algebra.htm
K12.sc.us ~ Site Info Whois Trace Route RBL Check

Dave's Short Course on Complex Numbers
An introduction with math and a little history intended for those having a familiarity with ordinary real numbers and algebra.
http://www.clarku.edu/~djoyce/complex/
Clarku.edu ~ Site Info Whois Trace Route RBL Check