Twistors- What are they? A set of notes introducing spinors and twistors. http://www.compsoc.net/~fedja/twistors/twistors.html

Dimensional Analysis A simple review of the powerful technique of dimensional analysis. http://www.physics.uoguelph.ca/tutorials/dimanaly/

Mathematical Methods I This site contains the complete lecture notes and homework sets for PHYCS498MMA, a course of mathematical methods for physics given to entering graduate students, and senior undergraduates, at the University of Illinois at Urbana-Champaign. http://w3.physics.uiuc.edu/~m-stone5/mma/mma.html

Hyperreal World Nonstandard analysis and its applications to quantum physics, by H.Yamashita. Mixed English/Japanese. http://www.sun-inet.or.jp/~leibniz/math/

Discrete Self-trapping Equation A bibliography in BibTeX format for those interested in discrete nonlinear Schrödinger type equations. http://www.ma.hw.ac.uk/~chris/dst/

Elastic Strain Soliton Visualization Windows demonstration program download. http://www.csa.ru/Inst/bogd_dep/nonlin/vizual.htm

Celestial Mechanics Research Links, animations, references, and a brief description of research into n-body problems. http://www.math.washington.edu/~hampton/research.html

This Week's Finds in Mathematical Physics This is a column written about modern topics in mathematical physics. http://math.ucr.edu/home/baez/TWF.html

Holomorphic Methods in Mathematical Physics This set of lecture notes by Brian C. Hall gives an introduction to holomorphic function spaces as used in mathematical physics. The emphasis is on the Segal-Bargmann space and the canonical commutation relations. http://arxiv.org/abs/quant-ph/9912054

Lectures on Orientifolds and Duality Notes by Atish Dabholkar on orientifolds emphasizing applications to duality. http://arxiv.org/abs/hep-th/9804208

Homological Methods in Mathematical Physics These lecture notes by Joseph Krasil'shchik and Alexander Verbovetsky are a systematic and self-contained exposition of the cohomological theories naturally related to partial differential equations. http://arxiv.org/abs/math.DG/9808130

Recent Developments in Skyrme Models An introduction by T. Gisiger and M.B. Paranjape to recent, more mathematical developments in the Skyrme model. The aim is to render these advances accessible to mainstream nuclear and particle physicists. http://arxiv.org/abs/hep-th/9812148

An Introduction to Noncommutative Geometry A set of lecture notes by Joseph C. Varilly on noncommutative geometry and its applications in physics. http://arxiv.org/abs/physics/9709045

Euclidean Geometric Transforms for Physics A new method of correlating physics formulas to derive one formula from a related formula using Euclidean geometry to represent the inter-relationship of physics formulas. http://physicstransforms.tripod.com/

Kinetic Theory and its Applications. This resource is devoted to mathematical aspects of kinetic theory and its applications in physics and chemistry. http://kinetic.boom.ru

Open Problems in Mathematics and Physics Links to open problems in mathematics, physics and other subjects. http://www.geocities.com/ednitou

Inexplicable Secrets of Creation Relationships between number theory and physics. http://www.maths.ex.ac.uk/~mwatkins/

Non Commutative Geometry Preprints of Alejandro Rivero about Connes's NCG and the Standard Model. Also some historical articles on related topics. http://dftuz.unizar.es/~rivero/research/index.html

Symplectic Geometries in Quantum Physics and Optics A comparison of symplectic geometry with Euclidean or unitary geometries in quantum physics and optics http://arxiv.org/abs/quant-ph/9509002

Topology and Physics An essay by C. Nash on the historical connection between topology and physics. http://arxiv.org/abs/hep-th/9709135