2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/153853Here we present some eigenstates for a 2+1-dimensional model associated with a solution of the tetrahedron equation. The eigenstates include those "particle-like" (namely one-particle and two-particle ones), constructed in analogy with the usual 1+1-dimensional Bethe ansatz, and some simple "string-like" ones.7 pages, LaTeXExactly Solvable and Integrable Systemstext