didericis
389fd56f07
Removes the "Further necessary properties of a minimal counterexample" framing section and the "Edge-deletion subgraphs" section (definition, 4-colorability theorem, Kempe-chain structure theorem). The intended empirical follow-up on this material did not produce a useful discriminator, so the development is being shelved. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>