Gradings on simple Lie algebras

Zoom seminar Quadratic forms, Linear algebraic groups and Beyond,  8:30-9:30am

https://uottawa-ca.zoom.us/j/99397061432?pwd=LzNBS1UrSVNJQ1ZiU28yWHAyNlV...

After reviewing the basic definitions about gradings, it will be shown how gradings by abelian groups on a (not necessarily associative) algebra correspond to morphisms from diagonalizable group schemes to the automorphism group scheme of the algebra. This is the clue to classify gradings on simple Lie algebras. The known classification results of such gradings will be surveyed.