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Revert the previous renaming of G'_ann; the symbol is back to T'_ann. The CONCEPT NAME is changed from "annular dual subgraph" to "tire annular subgraph" to clarify it's the tire's annular portion as seen in G'. Updates: - Definition 1.15 retitled "Tire annular subgraph" - Label changed to def:tire-annular-subgraph - Cross-references in Definition 1.16 and the spoke-only remark - Figure suptitle reverted to T'_ann - Regenerated fig_facial_dual_choices.png Paper stays at 10 pages. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>