2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40964An introductory review of physics of color superconducting state of matter is presented. Comparison with superconductivity in electron systems reveals difficulties involved in formulating color superconductivity theory at moderately ultra-nuclear density.17 pages, LaTeX2e, no figuresHigh Energy Physics - Phenomenologytext