Hello, The next Banach spaces webinar is on Friday May 7 at 9AM Central time. Please join us at https://unt.zoom.us/j/83807914306 Speaker: Jordi López Abad, UNED Title: A note on Pelczynski's universal basis space Abstract: We prove that the isometry group of a renorming of the Pelczynski's universal basis space is extremely amenable. To do this, we see that the class of finite dimensional normed spaces is a complemented Fraïssé class with the approximate Ramsey property. This is a joint work with Jamal Kawach. For more information about the past and future talks, and videos please visit the webinar website http://www.math.unt.edu/~bunyamin/banach Thank you, and best regards, Bunyamin Sari