2 problems

Let ${\mathfrak g}$ be a simple Lie algebra. Let $\mathfrak{Ab}({\mathfrak g})$ be the finite set of abelian ideals and $\mathfrak{Par}({\mathfrak g})$ the finite set of standard p…

Let ${\mathfrak g}$ be a simple Lie algebra, let $\mathfrak{Ab}({\mathfrak g})$ be the set of its abelian ideals, and let $\mathfrak{Par}({\mathfrak g})$ be the set of its standard…