Hi all, We have a webinar talk this Friday, April 21st at 9am (CDT). Zoom link: https://unt.zoom.us/j/85788417413 Looking forward to seeing you. Best regards, Bunyamin Title: On the relation of coarse embeddability between Banach spaces Speaker: Christian Rosendal (The University of Maryland) Abstract: Under the weak assumption on a Banach space $E$ that $E\oplus E$ embeds isomorphically into $E$, we provide a characterisation of when a Banach space $X$ coarsely embeds into $E$ via a single numerical invariant.