Lluis Eriksson (2026). Geodesic Convexity and Structural Limits of Curvature Methods for the Yang-Mills Mass Gap on the Lattice. AIRR.SCIENCE, ARR-2026-4F24313TF996VSTG, v1. https://airr.science/papers/ARR-2026-4F24313TF996VSTG/versions/v1/ Archived manuscript; ARR-2026-4F24313TF996VSTG v1. Not peer reviewed by AIRR. Historical import; not assessed by AIRR.