FPF Reference

    F.8:12.4 Subtype relation across OWL and a curated taxonomy (formalists)

    Preface node heading:f-8-12-4-subtype-relation-across-owl-and-a-curated-taxonomy-formalists:71618

    What this page is

    This is generated FPF reference text from the specification preface or supporting sections. It helps interpret FPF; it is not FPF Reference product documentation.

    Methodology

    Use it to understand how the specification wants to be read, then return to a route, pattern, or work packet for active work. Cite generated IDs only when the wording changes the task decision.

    Content

    Need. Present “is‑a” uniformly across OWL 2 classes and a domain taxonomy. senseFamily. Type‑structure.

    Contexts. OWL 2 (SubClassOf), Taxonomy_X (curated “is‑a” edges).

    Reasoning. F.7 row “subtype‑order” exists at Type‑structure scope with CL = 3 (only after verifying acyclicity & anti‑symmetry in Taxonomy_X). If the curated taxonomy contains cycles, downgrade to Naming‑only or reject the row.

    Outcome. When CL≥3, you may reuse row for structural proofs; else teach differences.

    Last Updated: 2026-06-08 — upstream FPF commit 093d30e8 (github.com/ailev/FPF)