WEYL GROUPS OF THE MARKED 3-EXTENDED AFFINE ROOT SYSTEMS

Tadayoshi Takebayashi (Japan)

Received February 9, 2008

Abstract

We describe the Weyl groups associated to the marked 3-extended affine root systems [1], [6] in terms of the 3-extended affine diagrams.

Keywords and phrases: marked 3-extended affine root system, Weyl group.