good numeric algorithms

some good numerical algorithms can be used in my charting applications

1. Affine Transformations in Computer Graphics
2. Fast stepwise rotation
3. Perspective Projection of a Rectangle (Homography)
4. Prime Number Algorithm
5. Dancing with Spirals
6. The Spiral TrackBar Control
7. Array-less Numerical Spiral Pattern
8. Looping in a spiral
9. LicenceProvider
10. Crafting an interpreter Part 1 - Parsing and Grammars
11. Crafting an interpreter Part 2 - The Calc0 Toy Language
12. Crafting an interpreter Part 3 - Parse Trees and Syntax Trees
13. Parsing Expression Grammar Support for C# 3.0 Part 1 - PEG Lib and Parser Generator
14. Update Checker For Software Update
15. Spiraling Twisting Polygons and Roses
16. Turtle Graphics and L-systems with F# and WPF
17. Graphing Calculator in C# with LES