2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/31246The pit recording of file, the coefficient of compression are introduced. The theoretical limit of the information compression as minimal coefficient of compression for the given length of alphabet are found.5 pages, report at the IMK's conference "Science and pedagogics on a boundary 21 centuries", in RussianCryptography and SecurityD.4.6; E.3text