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math-research/papers/even_level_graph_generators/paper.log
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didericis c947ce75ff Add Even Level Graph Generators paper + extend Level Switching reachability
- New paper papers/even_level_graph_generators/: defines Even Level
  Graph (every level cycle even), derived level graphs, intertwining
  trees, and the disjunction conjecture (every maximal planar graph is
  a derived level graph or intertwining tree). Empirically tested
  through n=11: every iso class is at least an intertwining tree, so
  the disjunction holds trivially in this range. The intertwining tree
  disjunct fails at the Tutte graph dual (n=25), so the disjunction
  becomes non-trivial past some unknown threshold.

- Level Switching paper: adds Section 4 (Reachability via edge
  switches) with the two-step argument (Sleator-Tarjan-Thurston for
  Case 1; face-merges for Case 2) and Theorem 4.1 (O(n) edge switches
  suffice to reach all-depth-0).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-21 16:44:39 -04:00

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