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DTSTART;VALUE=DATE:20170321T171500
DTEND;VALUE=DATE:20170321T171500
UID:5760@agenda.unifr.ch
DESCRIPTION:Throughout mathematics and its applications, one encounters sequences of algebraic varieties-geometric structures defined by polynomial equations. As the dimension of the variety grows, typically so does its complexity, measured, for instance, by the degrees of its defining equations.\n\nAnd yet, many sequences stabilise in the sense that from some member of the sequence on, all complexity is inherited from the smaller members by applying symmetries. I will present several examples of this, as yet, only partially understood phenomenon. Beautiful combinatorics of well-quasi-ordered sets plays a key role in the proofs.
SUMMARY:Prof. Jan Draisma (Uni Bern): Stabilisation in algebra and geometry
CATEGORIES:Colloque / Congrès / Forum
LOCATION:PER 08\, Phys 2.52\, Chemin du Musée 3\, 1700 Fribourg
URL;VALUE=URI:https://agenda.unifr.ch/e/fr/5760
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