Manuscript Oai069-A@1 · Oai069-A.tex · remark · a4913aab
Remark: Subsystem recovery is not full-code recovery
Phase 2: positive realization and access-restricted recovery › A complete decoder using only the receiver · lines 763–771
The complete complement of the encoder can retain the state of . It is therefore not constant on when . Nevertheless the subsystem is exactly recovered.
The constant-complete-complement criterion applies to full-code identity recovery KnillLaflamme. It must not be imposed as a necessary condition for the present partial-trace target.