On Multiple and Polynomial Recurrent extensions of infinite measure preserving transformations

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/222851We prove that multiple-recurrence and polynomial-recurrence of invertible infinite measure preserving transformations are both properties which pass to extensions.4 pages. Replaces "Extensions and Multiple Recurrence of infinite measure preserving systems", plus a result about polynomial recurrenceDynamical Systems37A05; 37A40On Multiple and Polynomial Recurrent extensions of infinite measure preserving transformationstext