Library / First Principles Framework (FPF) - Core Conceptual Specification
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Source changed 2026-10-03 08:25:59 UTC · snapshot created 2026-10-03 08:26:43 UTC · last check 2026-10-03 09:45:10 UTC

E.10:0.2c.30 - same, parity, identity, equivalence, mirror

Similarity is not identity. Before accepting same, parity, or equivalence wording, name which relation is being claimed:

  • mirror file in parity with a governing source;
  • same EntityOfConcern;
  • same claim content;
  • semantic equivalence;
  • bridge relation;
  • version identity;
  • file or carrier equality;
  • source-publication identity;
  • no-loss transform.

If the relation is about mirror parity, verify against the governing source or state that the check is not performed. If the relation is semantic, use A.6.3, A.6.4, F.9, or the selected bridge pattern or equivalence pattern rather than relying on matching labels.