BEGIN:VCALENDAR VERSION:2.0 PRODID:-//TYPO3/NONSGML News system (news)//EN BEGIN:VEVENT UID: news-28017@www.math.uoa.gr DTSTAMP:20220223T141050Z DTSTART:20220223T140934 DTEND:20220225T170000 SUMMARY:Seminar: Functional Analysis and Operator Algebras - Topologies, idempotents and ideals END:VEVENT END:VCALENDAR