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Library / First Principles Framework (FPF) - Core Conceptual Specification
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Source changed 2026-10-03 05:29:54 UTC · snapshot created 2026-10-03 05:30:57 UTC · last check 2026-10-03 07:20:10 UTC

A.19.SOURCE-SET-SPACE-SUBSTRATE:4.9 - Descriptor maps and distance definitions dock here, but do not replace the space refs

When a neighboring line already uses DescriptorMapRef or DistanceDefRef, dock it explicitly:

  • DescriptorMapRef may realize or qualify the search-side or outcome-side representation requirement, as the current line requires;
  • DistanceDefRef may realize or qualify the metric requirement over that representation on either side, as the current line requires;
  • but neither one replaces SearchSpaceRef or OutcomeSpaceRef;
  • and CharacteristicSpace remains a different kind from DescriptorMap.

Use this docking rule whenever a reader could otherwise mistake one local representation layer for the whole search-side or outcome-side space reference.