2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/69700The following is consistent: There is a stationary set S such that every Aronszajn tree is S-*-special and there is an Aronszajn tree T such that for every unbounded E we have T is not E-special. This answers a question of Shelah (Proper and Improper Forcing, IX.4.9(5).Logic03E35text