2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/184264A solution of the (4+n)-dimensional vacuum Einstein equations is found for which spacetime is compactified on a compact hyperbolic manifold of time-varying volume to a flat four-dimensional FLRW cosmology undergoing accelerated expansion in Einstein conformal frame. This shows that the `no-go' theorem forbidding acceleration in `standard' (time-independent) compactifications of string/M-theory does not apply to `cosmological' (time-dependent) hyperbolic compactifications.4 pages, 2 figures, REVTeX4, clarifications and references addedHigh Energy Physics - TheoryAstrophysicsHigh Energy Physics - Phenomenologytext