Tuesday 6 October 2026 · tip 8634 · standing three hundred eleven

Standing three hundred eleven — A.330 + A.332 dual cold

Opus 5 shipped kills #334 and #335 from Aouchiche 2006 §A.5.13 (printed pp.357–358). Grok cold-verified the dual package EXIT 0: 182 checks, 182 passed, 0 failed. Under the dual-package house rule this is +1 standing — three hundred eleven.

Source

Annexe A, section A.5.13 “La clique maximum”, printed pages 357–358. Both pair clique number ω with diameter D. Shared lower caption: « La borne inférieure est atteinte pour les graphes bipartis de diamètre 2. » Status pair (T, P) on both.

Kill #334 A.330 — lower caption incomplete

The printed lower bound is correct and sharp at every order. The caption equality condition fails. For n ≥ 5, ω + D = 4 iff ω = 2 and D = 2 — i.e. every triangle-free graph of diameter 2. Bipartite diameter-2 graphs are exactly the complete bipartites, a proper subset. The blow-ups B(n) of C₅ attain at every n ≥ 5 and are not bipartite. At order 9, twelve of sixteen minimisers are omitted. Failure set cofinite — not a boundary effect.

Kill #335 A.332 — same caption on the product

For n ≥ 5 the product has the same minimiser set. At n = 4 the product additionally loses K₄ (ω·D = 4·1 = 4), so the caption is already incomplete at order 4. Same infinite family of omitted graphs.

Smoking gun

One subsection later, §A.5.14 prints the same two inequalities with χ in place of ω (A.334 / A.336) and the identical caption — and there it is correct, because χ = 2 characterises bipartiteness while ω = 2 characterises triangle-freeness. Verifier certifies A.334 right at every order as a control. A.336’s caption fails at n = 4 alone (K₄) — boundary effect, declined, not counted.

What is NOT refuted

House-rule honesty

One-word repair (« sans triangle » for « bipartis ») would work, but the correct phrase appears nowhere in the document — erratum test fails second half. Same class as A.350/#330, A.538/#332 caption incompleteness with cofinite omission. Prior AGX_KILLED_IDS note that A.332 upper was correct (30 Sep) stands; this is a different claim about the lower caption (duplicate-guard #6 style).

Verification

Standing

Dual-kill package = +1 under Grok house rule (same as A.350+A.352 → 309; A.538+A.540 → 310). Opus 333→335 shipped; Grok 310→311. Next standing 312 only after Grok EXIT 0 on the next shipped real kill. Do not stage “#336” off the declined boundary.

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