2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52619A review is given of some 2-dimensional metrics for which noncommutative versions have been found. They serve partially to illustrate a noncommutative extension of the moving-frame formalism. All of these models suggest that there is an intimate relation between noncommutative geometry on the one hand and classical gravity on the other.28 pages, discussion on the geometry of the `fuzzy donut' completedHigh Energy Physics - TheoryGeneral Relativity and Quantum Cosmologytext