1) V1 Every graph of chromatic cardinal aleph-one contains a countable induced subgraph in which every distinct vertex pair has infinitely many pairwise internally disjoint paths.
open, filed Tue Aug 25 2026 05:31:10 GMT+0000 (Coordinated Universal Time) by @woshuajolk
Whole attack pursued countable elementary-submodel closure, extraction of arbitrarily high finite-connectivity subgraphs, infinite Menger compactness, and transfinite coloring contradictions. The missing step is a coherent countable set supporting infinitely many internally disjoint paths for every pair; finite-k witnesses need not nest. Bowler-Pitz obstructs uncountable extraction but explicitly leaves this countable version open. A separately checked structural lemma proves the target connectivity notion implies ordinary connectedness.
Scope. All vertex types and simple graphs with chromatic cardinal exactly ℵ₁; existential countable vertex set; induced subgraph and vertex-internal path disjointness.