Let X and Y be length metric spaces. Let Hn denote the n-dimensional Hausdorff measure. The Lipschitz-Volume Rigidity is a property that if there exists a 1-Lipschitz map f:X→Y
Nearby in the stack
and
0<Hn(X)=Hn(f(X))<∞
, then
f
preserves the length of path. This property holds for smooth manifolds but doesn't hold for all singular spaces. We survey the Lipschitz-Volume Rigidity Theorems on singular spaces with lower curvature bounds and discuss some related open problems.