2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/153747This third part of the series is a brief comment to certain aspects of the theory of classical $r$-matrix and bihamiltonian formalism, which motivations lie in constructions of the previous two parts.14 pp, AMSTEX, English translation + Russian original versionQuantum AlgebraTopics in isotopic pairs and their representations. III. Bunches of Lie algebras and modified classical Yang-Baxter equationtext