# What is the Affine Weyl Group?

I would appreciate any information about the Affine Weyl Group, including references to good expositions on the topic. Thank you

-
Have you tried Wikipedia?.. –  Grigory M Nov 2 '12 at 14:14
Thank you. I was hoping for more detail, such as presentation, properties and possibly some intuition. –  Plum Nov 2 '12 at 14:53