2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/79942The boundary problem for a two-dimensional elliptical equation -sinh-Gordon has been investigated. The exact solutions have been found and identities of traces have been proposed. The application of the problem to the model of the Coulomb's plasma with the negative temperature has been considered.14 pages, LaTexExactly Solvable and Integrable Systemstext