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UID:20250731T030143EDT-8804DsdoSH@132.216.98.100
DTSTAMP:20250731T070143Z
DESCRIPTION:Title: Irregular examples of indecomposable Steiner trees with 
 infinite number of branching points\n\nAbstract: A general metric Steiner 
 problem is a problem of finding a set S with the minimal length\, such tha
 t S∪A is connected\, where A is a given compact subset of a given complete
  metric space X\; a solution is called the Steiner tree. By indecomposable
  Steiner tree we mean such a Steiner tree S that S \ A remains connected. 
 This means that such a tree cannot be obtained as the union of several Ste
 iner trees for subsets of A.\n	I will talk about examples of indecomposable
  Steiner trees with infinite number of branching points in Euclidean plane
 : I will provide ''small'' (connecting countable number of the terminal po
 ints) and ''large'' (connecting totally disconnected set of positive Hausd
 orff dimension) examples. These questions were motivated by search of irre
 gular structures contained in Steiner trees. If we have enough time\, we w
 ill even go beyond the plane. Everybody is welcome\, no preliminary math k
 nowledge needed.\n	Based on joint works with D. Cherkashin\, E. Stepanov\, 
 E. Paolini\n\nIn person: Pavillion André-Aisenstadt\, room 5183\n\nJoin Zo
 om Meeting\n\nhttps://umontreal.zoom.us/j/89528730384?pwd=IF10Cg8C0YfogaBl
 L6F1NboPaQvAaV.1\n\nMeeting ID: 895 2873 0384\n\nPasscode: 077937\n\n \n
DTSTART:20250314T180000Z
DTEND:20250314T190000Z
SUMMARY:Yana Teplitskaya (Paris-Saclay)
URL:/mathstat/channels/event/yana-teplitskaya-paris-sa
 clay-364172
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