# 电竞菠菜外围app

The asymptotic geometry of 4D steady Ricci solitons

The asymptotic geometry is important for the classification of Ricci solitons. In this talk, we will classify the asymptotic geometry of 4D  steady gradient Ricci solitons (which are singularity models) whose Ricci curvature is nonnegative outside a compact set. As an application, we will show such steady  Kahler-Ricci solitons must  be Ricci-flat.