Weyl group orbit functions are defined in the context of Weyl groups of simple Lie algebras. They are multivariable complex functions possessing remarkable properties such as (anti)invariance with respect to the corresponding Weyl group. continuous and discrete orthogonality. A crucial tool in their definition are so-called sign homomorphisms. https://thegreensjunglebeautyshops.shop/product-category/liquid-eyeliner/