For a linear algebraic group G,a versal G-variety can be viewed as a birational version of a classifying space for G.However,unlike universal objects,they f
Minuscule varieties consist of 6 series of particular rational homogeneous manifolds.We shall construct them inductively from the most simple varieties by b
As part of a series of important activities of China Cultural Year in Germany to commemorate the 40th anniversary of the establishment of diplomatic relations b
I consider del Pezzo surfaces with only log terminal singularities admitting an action of a finite simple group G.Any del Pezzo surface with log terminal si