2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/72760In this short note, we show that the cohomology of an algebra entwined with a coalgebra as defined by T. Brzeziński (J. Algebra 235 (2001), no. 1, 176--202; arXiv:math.RA/9909108) computes the Hochschild cohomology of the subalgebra of coinvariants when the extension is Galois.LaTeX, 3 pagesQuantum AlgebraK-Theory and Homology16W30; 16E40text