BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
X-WR-CALNAME:Algebra Seminar:  A Geometric Classification of the Holomorphi
 c Vertex Operator Algebras of Central Charge 24
X-WR-TIMEZONE:Central Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260915T150832Z
UID:tag:localist.com\,2008:EventInstance_41411433053616
DTSTART:20221031T213000Z
DTEND:20221031T222000Z
DESCRIPTION:Speaker: Sven Möller (University of Hamburg\, Germany)\n\nAbst
 ract: Borcherds showed that there is a bijection between the deep holes of
  the Leech lattice and the Niemeier lattices with non-trivial root system.
  This allows a geometric classification of these lattices (by means of cer
 tain Dynkin diagrams called hole diagrams). Using modular forms we recentl
 y established an analogous result for the holomorphic vertex operator alge
 bras of central charge 24 with non-trivial weight-1 space. They are in bij
 ection with the generalised deep holes of the Leech lattice vertex operato
 r algebra. In this talk I will present a geometric classification of these
  vertex operator algebras based on this result (by means of certain genera
 lised hole diagrams). This is joint work with Nils Scheithauer.
LOCATION:Cardwell Hall \, CW 120
SUMMARY:Algebra Seminar:  A Geometric Classification of the Holomorphic Ver
 tex Operator Algebras of Central Charge 24
URL;VALUE=URI:https://events.k-state.edu/event/algebra_seminar_a_geometric_
 classification_of_the_holomorphic_vertex_operator_algebras_of_central_char
 ge_24
CATEGORIES:Lecture\, Colloquia\, Seminar
END:VEVENT
END:VCALENDAR