Riemannian Geometry

A set of postscript lecture notes for a graduate level course on Riemannian geometry.
http://www.maths.lth.se/matematiklu/personal/sigma/Riemann.ps

Riemannian Geometry

Mostly a definition with a few equations.
http://www.treasure-troves.com/math/RiemannianGeometry.html

Differential Geometry Page

Contains several figures which are the result of easy codes using Mathematica, including Enneper's surface.
http://math.bu.edu/people/carlosm/Diffeo.html

ArXiv Front: DG Differential Geometry

Differential geometry section of the mathematics e-print arXiv.
http://front.math.ucdavis.edu/math.DG

John Oprea's Home Page

This site includes references to the author's papers and books, including Differential Geometry and its Applications and The Mathematics of Soap Films: Explorations with Maple. There are also Maple files available for downloading.
http://www.csuohio.edu/math/oprea

The Scientific Graphics Project

This site contains didactic and research information about the differential geometry of minimal and constant-mean-curvature surfaces. It also addresses their application in materials science. It is full of illustrations and animations, and also contains
http://www.msri.org/publications/sgp/SGP/

Alfred Gray Differental Geometry

Graphics of suface geometry. Mathematica code and gallery of images.
http://math.cl.uh.edu/~gray/

Finite Canonical Commutation Relations

A working paper on FCCR nxn matrices as local kinematical replacement for CCR, and representations by pxp matrices over Galois fields.
http://graham.main.nc.us/~bhammel/FCCR/fccr.html

Differential Geometry

Lecture notes for a course at the Weizmann Institute of Science by Sergei Yakovenko. Chapters in DVI.
http://www.wisdom.weizmann.ac.il/~yakov/Geometry/

Classical Curve Theory and Frenet Equations

A systematic overview of classical curve theory, including Frenet equations and their known solutions, some results on moving frames (relationship between Frenet and Bishop Frame), spherical curves and surface curves.
http://www.geocities.com/expotition2002/curves/

Non-Commutative Geometry

A short historical review is made of some recent literature in the field of noncommutative geometry
http://arxiv.org/abs/gr-qc/9906059

Differential Geometry

Differential Geometry basic definitions.
http://www-ipg.umds.ac.uk/p.batchelor/curvatures/node1.html

Differential geometry of curves

Answers.com encyclopedia entry on Differential Geometry.
http://www.answers.com/topic/differential-geometry-of-curves