Great Maths/Technical Sites

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Continued from a previous post on in search of the truth...(great sites)

1. A good site to pick up the basics of Monte Carlo method
http://csep1.phy.ornl.gov/mc/mc.html

2. A good mathematics resource with OR, Calculus, Number Theory etc.
http://archives.math.utk.edu/tutorials.html

3. Electronic Library of Mathematics
http://www.emis.de/ELibM.html

4. Feynman Lectures in Physics Vols I, II and III
http://mafihe.hu/~bnc/feynman/

5. Some of the best links to other maths sites
http://www.cut-the-knot.com/collection.shtml

6. A good resource for Computational Techniques/Tools and Optimisation
(including differential equations, simulations and algaebric techniques)
http://csep1.phy.ornl.gov/textalk.html