摘要
Imaginary root is an important concept in Kac-Moody algebras, which presents the naturaldifference between Kac-Moody algebras and finite dimensional simple Lie algebras. In thisnote, we will first describe the strictly imaginary roots, and then the minimal imaginaryroots.
Imaginary root is an important concept in Kac-Moody algebras, which presents the natural difference between Kac-Moody algebras and finite dimensional simple Lie algebras. In this note, we will first describe the strictly imaginary roots, and then the minimal imaginary roots.
