Local reduced state and random marginal

ID: quantum.information.local_reduced_state

Partial trace removes the unavailable partner record; either side of an ideal singlet locally has I/2.

Status: canonical_reference

Uncertainty

• This canonical_reference badge is a theory locator; its claim still needs independent, claim-specific validation.

Sources

• https://cds.cern.ch/record/111654/files/vol1p195-200_001.pdf

Claim boundaries

• This badge locates a theory claim; it does not validate a physical effect or engineering application.

Diagnostic context only. Cite independent evidence for claims about the world.