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SUMMARY:Rui Loja Fernandes (University of Illinois Urbana-Champaign)
DTSTART:20260106T150000Z
DTEND:20260106T160000Z
DTSTAMP:20260423T022624Z
UID:Geolis/178
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/Geolis/178/"
 >Resolutions of proper actions and toric manifolds</a>\nby Rui Loja Fernan
 des (University of Illinois Urbana-Champaign) as part of Geometria em Lisb
 oa (IST)\n\n\nAbstract\nI will define a notion of resolution of a proper a
 ction. Such resolutions always exist but are not canonical. However\, for 
 so-called polar actions I will describe a canonical construction of a reso
 lution\, which can be used to show that the leaf space has the structure o
 f an orbifold. I will illustrate this construction with two examples: (i) 
 the adjoint action\, where it allows one to identify the classical Weyl gr
 oup with the orbifold fundamental group\; and (ii) toric manifolds\, where
  the resolution can be described in terms of the real part of the toric ma
 nifold.\n
LOCATION:https://researchseminars.org/talk/Geolis/178/
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