BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Sergey Agafonov
DTSTART:20231206T162000Z
DTEND:20231206T180000Z
DTSTAMP:20260423T010138Z
UID:GDEq/100
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/GDEq/100/">H
 exagonal circular 3-webs with polar curves of degree three</a>\nby Sergey 
 Agafonov as part of Geometry of differential equations seminar\n\nLecture 
 held in room 303 of the Independent University of Moscow.\n\nAbstract\nLie
  sphere geometry describes circles on the unit sphere by polar points of t
 hese circles. Therefore a one parameter family of circles corresponds to a
  curve and a 3-web of circles\, i.e.\, 3 foliations by circles\, is fixed 
 by 3 curves. We call the union of these curves the polar curve and show ho
 w analysis of the singular set of hexagonal 3-webs helps to classify circu
 lar hexagonal 3-webs with polar curves of degree 3. Many of the found webs
  are new. The presented results mark the progress in the Blaschke-Bol prob
 lem posed almost one hundred years ago. More detail in <a href="https://ar
 xiv.org/abs/2306.11707">arXiv:2306.11707</a>.\n
LOCATION:https://researchseminars.org/talk/GDEq/100/
END:VEVENT
END:VCALENDAR