2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/86192Problems associated with the nonextensivity of a hadron gas were discussed some time ago. Recently the topic has come to light again and here earlier results are re-examined in the light of new knowledge and attention is drawn to problems with the more modern work.4 pagesGeneral PhysicsHadron thermodynamics, concavity and negative heat capacitiestext