2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/76520Let E be an elliptic curve defined via a Weierstrass equation F(x,y)=0 over an infinite field k. Denote by A the coordinate ring of E. In this note we compute the integral homology of PGL_2(A). We obtain a rigidity result as a corollary.6 pages, 3 figuresK-Theory and HomologyGroup Theory20G10text