Verification Summary
CLT Holds All tested elliptical distributions pass the KS normality test for the centered DRIS estimator.
RE Vanishes Relative error decreases as O(1/sqrt(n)) for distributions with finite 4th moments.
Heavy Tails Student-t (df=3) shows slower convergence due to infinite 4th moment.
Monotonic DRIS estimates increase monotonically with Wasserstein radius for all families.