2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51267Internal microscopic symmetry of a many body system leads to global constraints. We obtain explicit forms of the global macroscopic condition assuring that at the microscopic level the evolution respects the overall symmetry.Talk given at the Cracow Epiphany Conference on Quarks and Gluons in Extreme Conditions, Cracow, Poland, January 3-6, 2002. To be published in Acta Physica Polonica B. 9 pages, 1 figureHigh Energy Physics - Theorytext