Please register in advance for this meeting:
https://zoom.us/meeting/register/tJwsfuCpqDItHtVH3zEEI4EJxD9zuyWNbhlY
After registering, you will receive a confirmation email containing information about joining the meeting.

Abstract: We study transfer operators associated to piecewise monotone interval transformations and show that the essential spectrum is large for any relevant Banach space when the transformation fails to be Markov. Constructing a family of Banach spaces we show that the lower bound on the essential spectral radius is optimal. Indeed, these Banach spaces realise an essential spectral radius as close as desired to the theoretical best possible case.