2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/73879It is shown that certain quasi-free flows on the Cuntz algebra $O_\infty$ have the Rohlin property and therefore are cocycle-conjugate with each other. This, in particular, shows that any unital separable nuclear purely infinite simple C*-algebra has a Rohlin flow.Operator Algebras46L55; 46L57text