2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/119083We present examples of equivariant noncommutative Lorentzian spectral geometries. The equivariance with respect to a compact isometry group (or quantum group) allows to construct the algebraic data of a version of spectral triple geometry adapted to the situation of an indefinite metric. The spectrum of the equivariant Dirac operator is calculated.27 pagesMathematical Physics58B34; 46L87; 53C50text