ArXiv Front: GR Group Theory - Group theory section of the mathematics e-print arXiv. Group Pub Forum Home Page - These are the community pages for Group Theory, the mathematics of symmetry. Group Theory is a branch of algebra, but has strong connections with almost all parts of mathematics. Coxeter/Weyl Tutorial - A Tutorial Introduction to the Coxeter and Weyl Packages, a pair of Maple packages for working with root systems, finite Coxeter groups and Weyl characters International Society for Group Theory in Cognitive Science - Group theory in: Robotics, Problem-Solving, Planning, Learning, Language, Perception, Art, Design, Engineering, Manufacturing, Epistemology, Measurement, Computation, Neuroscience, Anthropology, Semiotics. GAP - Groups, Algorithms and Programming - GAP is a free system for computational discrete algebra. Permutation Group Problems - Compiled by Peter Cameron. Permutation Groups Resources - Web-based resources for permutation groups and related areas in group theory and combinatorics. Papers by R. E. Borcherds - Including proof of the Moonshine Conjecture (TeX, DVI, PDF). Trinomials with Interesting Galois Groups - Parametrisation of trinomials with Galois groups contained in the simple group G168. Binary Coordinate Systems - Article by Steven H. Cullinane. Defines "Cartesian" coordinate systems for small finite geometries over the two-element field, and discusses geometrically simple generators for affine group actions. PARGAP - Parallel GAP/MPI (ParGAP/MPI), a share package for GAP. UNIX (or Cygwin/Windows). Download source and documentation by FTP. Broue's Abelian Defect Group Conjecture - A record of which groups and blocks have been proved to satisfy the conjecture, maintained by Jeremy Rickard. Group Action Forum - Association for the study of the theory of transformation groups and related topics. Members, news, events, publications. Group Theory - On-line book by Prederic Cvitanovic. Available both in 'psd' and 'ps' formats. The Lie algebras su(N), an introduction - Publication: An Introduction to the Lie Algebras su(N). By Walter Pfeifer, Switzerland. A free copy can be ordered. Computational Tools for Group Theory - Describes work to create a program that could be used to generate, identify, and analyze finite groups presented in the form of a Cayley Table as well as visualize the groups that are generated. Abstract groups - The abstract group concept. Material based on lectures by Peter Neumann. Common Systems of Coset Representatives - Proof of the existence of a common system of representatives for the left and right cosets of a finite subgroup of a group by Ashay Dharwadker. Topological Methods in Group Theory - Table of contents only; draft chapters can be downloaded by arrangement. Semigroup Theory - Directory of home pages and conferences maintained at Southampton University. Group Theory - Information from Wikipedia on this concept, central to abstract algebra, its history, the main classes of groups and the applications of group theory. Symmetry - The main point group symmetries of interest to defect physics by operation (reflection, rotations etc) and classification (trigonal, and cubic). Most point groups also have the associated character table on-line. Introduction to Group Theory - A fairly easy to understand tutorial. Fourteen sections, including groups, Cayley tables, subgroups, cosets, Lagrange's theorem, cyclic groups and subgroups, permutations, and Rubik's cube.