Levi graph of projective plane PG(2,7) simultaneously refutes WOW 276, 277, and 278: mean 4 vs radius 3, n over alpha 2, average distance 2.363 — a single counterexample structure destroying three long-standing conjectures.
Levi graph of projective plane PG(2,7) simultaneously refutes WOW 276, 277, and 278: mean 4 vs radius 3, n over alpha 2, average distance 2.363 — a single counterexample structure destroying three long-standing conjectures.