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didericis 2c55af3c0a coloring_nested_tire_graphs: rename "annular dual subgraph" → "tire annular subgraph"; revert symbol to T'_ann
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>
2026-05-25 22:50:03 -04:00
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