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SUMMARY:Masoumeh Zarei (Universität Augsburg)
DTSTART:20210113T160000Z
DTEND:20210113T170000Z
DTSTAMP:20260423T052923Z
UID:VSGS/19
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/VSGS/19/">To
 rus actions on 4-dimensional Alexandrov spaces</a>\nby Masoumeh Zarei (Uni
 versität Augsburg) as part of Virtual seminar on geometry with symmetries
 \n\n\nAbstract\nEquivariant classification of $T^2$-actions on smooth clos
 ed orientable 4-dimensional manifolds was obtained by Orlik and Raymond in
  70's. In particular\, they showed that the smooth classification is equiv
 alent to the topological classification. In this talk\, I present an equiv
 ariant classification of isometric $T^2$-actions on closed\, orientable\, 
 four-dimensional Alexandrov spaces\, which generalizes the equivariant cla
 ssification of Orlik and Raymond. Moreover\, we show that such Alexandrov 
 spaces are equivariantly homeomorphic to 4-dimensional Riemannian orbifold
 s with isometric $T^2$-actions. This is joint work with Diego Corro and Je
 sús Núñez-Zimbrón.\n
LOCATION:https://researchseminars.org/talk/VSGS/19/
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