Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

Let $f$ be a Dynkin diagram automorphism. Extend $f$ linearly to the root system $\Delta$.

What is a set of representatives of the orbits of $\Delta$ under $f$ ?


share|improve this question

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.