2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/99988Motions of the plane (shifts and rotations) correspond to automorphisms of the type I Arveson system of white noise. I prove that automorphisms corresponding to rotations cannot be extended to the type II Arveson system of Warren's noise.11 pagesOperator AlgebrasProbabilityAutomorphisms of the type II_1 Arveson system of Warren's noisetext