ICTP Mathematics Seminar - Thursday 28 July, at 16:00 (Giovanni Canestrari)/hybrid seminar

[ICTP Math Section]

_ICTP MATHEMATICS SEMINAR_

Hybrid seminar

Thursday, 28 July, at 16:00

Speaker: Giovanni Canestrari (Rome Tor Vergata)

Title: Discontinuities cause essential spectrum

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.

/This will be a hybrid seminar. All are very welcome to join either 
online or in person. Venue: Luigi Stasi Seminar Room (ICTP Leonardo Da 
Vinci Building), for those wishing to attend in person.//
/

-- 
Koutou Mabilo
ICTP Mathematics Group
Leonardo Da Vinci Building
Strada Costiera no. 11
34151 Trieste, Italy
Tel. no.: +39-040-2240455

For to be free is not merely to cast off one's chains, but to live in a way
that respects and enhances the freedom of others. Nelson Mandela