Unified (r, s)-Entropies of Partitions on Sequential Effect Algebras

By using the partitions and refinements of sequential effect algebras (SEAs), we introduce the unified (r, s)-entropies and unified (r, s)-conditional entropies of partitions on SEAs. Several important relations of the unified (r, s)-entropies on SEAs are established, which reflect the noncommutativity of quantum effects.