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 09:00:05 UTC

C.3.A:4.6 - Guard_XContext_Typed — cross-context typed reuse

Intent. Reuse claim C from a source context in target TargetSlice while keeping scope translation, kind correspondence, and target classification separate.

Guard_XContext_Typed(C, sourceKind, sourceSignatureEdition, targetKind, targetSignatureEdition, TargetSlice, candidate?) SHALL:

  1. when the receiving claim requires Scope translation, recover the obtaining Scope Bridge and its applicable congruence assessment, the separate affirmative translation-use claim, and the current reliance branch under A.2.6;
  2. compare source and target kind identity and establish the receiving use’s declaration-level compatibility under §4.1; if that compatibility relies on a directional correspondence between distinct kinds, recover an obtaining KindBridge relation with exact source/target kind participants and its separate bridge assertion with pinned scheme/signature editions, mapping rule, definedness, CL^k, loss, evidence, and admitted use;
  3. recover the independently identified target KindSignature edition;
  4. require Claim scope, translated when needed, to cover TargetSlice;
  5. when an actual candidate is current, evaluate the fresh target judgment J(candidate, targetKind, targetSignatureEdition, TargetSlice) and preserve all three values;
  6. apply the justified scope- and kind-bridge consequences to R only; and
  7. make the separate allow/refuse decision.

A source judgment may support reliance but MUST NOT be copied as target truth. If no candidate is current, the guard ends at declaration-level compatibility and scope; it does not fabricate one.