Preprint
Aug 2026
Exact Second-Order Asymptotics for the Wyner--Ahlswede--K\"orner Problem
We determine the exact local second-order rate region of the finite-alphabet Wyner--Ahlswede--K\"orner problem under full support, at informative boundary points exposed by a finite supporting slope. The characterization permits nonunique optimizing test channels with unequal information variances and requires no neigh...
Da-Ming Cao
· 1 citation