didericis 5f6a04571c Confirm duals 1,2 are Even Level Graphs outright; archive all six witnesses ...

Tested duals 1 and 2: both are Even Level Graphs directly (dual 1 for
source 10, dual 2 for source 9), so bridge-derived with a zero-length
switch sequence. All six Holton-McKay duals are confirmed non-intertwining
(consistent with the dual-Hamiltonian theorem, since all six HM graphs are
non-Hamiltonian) and all six are bridge-derived. Saved witness files
dual_1.json, dual_2.json (0 switches) to complete the archive for all six.
Updated the n=21 subsection accordingly.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

2026-05-22 11:11:25 -04:00

538 KiB

Raw History

View Raw