2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/22058The appearance of the fermion condensation, which can be compared to the Bose-Einstein condensation, in high-T_c metals, heavy-fermion metals and in other liquids is considered, its properties are discussed and a large number of experimental evidences in favor of the existence of the fermion condensate is presented.28 pages, Revtex. Invited lecture at XXXVII Winter School of Petersburg Nuclear Physics Institute, Repino, 2003Strongly Correlated Electronstext