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SUMMARY:Johannes Rau (Universidad de los Andes)
DTSTART:20220218T130000Z
DTEND:20220218T135000Z
DTSTAMP:20260422T172515Z
UID:TGiZ/34
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/TGiZ/34/">Pa
 tchworks of real algebraic varieties in higher codimension</a>\nby Johanne
 s Rau (Universidad de los Andes) as part of Tropical Geometry in Frankfurt
 /Zoom TGiF/Z\n\n\nAbstract\nI will present a combinatorial setup\, based o
 n smooth tropical varieties and real phase structures\, which after "unfol
 ding" produces a certain class of PL-manifolds (called patchworks). We hav
 e two motivations in mind: Firstly\, in the spirit of  Viro's combinatoria
 l patchwoking for hypersurfaces\, these patchworks can be used to describe
  the topology of real algebraic varieties close to the tropical limit. Sec
 ondly\, even if not "realisable" by real algebraic varieties\, real phase 
 structures provide a geometric framework for combinatorial structures such
  as oriented matroids. Joint work with Arthur Renaudineau and Kris Shaw.\n
LOCATION:https://researchseminars.org/talk/TGiZ/34/
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