Links

Astrophysics

• Stretch, Twist, Fold: The Fast Dynamo by Stephen Childress, Andrew D. Gilberts

Knots

• Table of Knot Invariants

Computing

• Pencil Code home page
• fityk, a powerful and userfriendly curve fitting program for many platforms, under GPL
• Gnuplot - not so Frequently Asked Questions -, probably the best resource on gnuplot on the web
• GDL - GNU Data Language, a GPL licenced alternative to IDL, mostly compatible with it
• Numerical Recipes in C
• Programming Texts and Tutorials, a huge selection of tutorials covering almost every computer language