BEGIN:VCALENDAR VERSION:2.0 PRODID:-//TYPO3/NONSGML News system (news)//EN BEGIN:VEVENT UID: news-59181@www.math.uoa.gr DTSTAMP:20240614T134539Z DTSTART:20240618T140000 SUMMARY:Γενικό Σεμινάριο - Classification and complexity problems for separable Banach spaces END:VEVENT END:VCALENDAR