Richard Rusczyk is the founder of the Art of Problem Solving website and co-writer with Sandor Lehoczky of the original Art of Problem Solving books. He is also a co-founder with Sandor Lehoczky and Sam Vandervelde of the Mandlebrot Competition. A picture of him can be found here.
His username on AoPS is rrusczyk.
- Richard Rusczyk on Wikipedia
- Introduction to Algebra
- Introduction to Geometry
- Intermediate Algebra
- the Art of Problem Solving Volume 1: the Basics
- the Art of Problem Solving Volume 2: and Beyond