2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/228641In this paper we show that the relation between Kajiura-Stasheff's OCHA and A. Voronov's swiss-cheese operad is analogous to the relation between SH Lie algebras and the little discs operad. More precisely, we show that the OCHA operad is quasi-isomorphic to the operad of top-dimensional homology classes of the swiss-cheese operad.26 pages; 5 figures; v4: exposition improved, inaccuracies corrected, to appear in JHRSQuantum AlgebraAlgebraic Topology18G55; 18D50text