2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/21866It is shown that the recently introduced singularities of the microcanonical entropy like "microcanonical phase transitions", and exotic pattern of the microcanonical caloric curve T(E) like multi-valuednes or the appearance of "dinosaur's necks" are inconsistent with Boltzmann's fundamental definition of entropy S=ln[W(E)] for a system at equilibrium even for extremely large systems as astro-physical ones.1 pageStatistical MechanicsAstrophysicsNuclear Theorytext