BEGIN:VCALENDAR
VERSION:2.0
PRODID:"-//Durham University/Seminars"
METHOD:PUBLISH
BEGIN:VEVENT
UID:SEMINAR6430
SEQUENCE:0
DTSTAMP:20200529T131702Z
DTSTART:20200604T120000Z
DTEND:20200604T130000Z
STATUS:CONFIRMED
TRANSP:OPAQUE
LOCATION:Online. The talk will be broadcast via Zoom.
SUMMARY:Geometry and Topology Seminar: The minimal diameter of a hyperboli
c surface
DESCRIPTION:Bram Petri, Université Sorbonne\nFor every genus g larger tha
n 1, there exists a 6g-6 dimensional deformation space of hyperbolic metri
cs (i.e. of constant curvature -1) on a closed orientable surface of genus
g. In this space, one can find surfaces of arbitrarily large diameter. On
the other hand, there is a lower bound on the diameter of a hyperbolic su
rface of genus g. In this talk I will speak about the asymptotic behavior
of this bound as g tends to infinity. This is joint work with Thomas Budzi
nski and Nicolas Curien.
END:VEVENT
BEGIN:VEVENT
UID:SEMINAR6431
SEQUENCE:0
DTSTAMP:20200529T131702Z
DTSTART:20200611T120000Z
DTEND:20200611T130000Z
STATUS:CONFIRMED
TRANSP:OPAQUE
LOCATION:
SUMMARY:Geometry and Topology Seminar: TBA
DESCRIPTION:TBA, \nTBA
END:VEVENT
BEGIN:VEVENT
UID:SEMINAR6432
SEQUENCE:0
DTSTAMP:20200529T131702Z
DTSTART:20200618T120000Z
DTEND:20200618T130000Z
STATUS:CONFIRMED
TRANSP:OPAQUE
LOCATION:
SUMMARY:Geometry and Topology Seminar: TBA
DESCRIPTION:TBA, \nTBA
END:VEVENT
BEGIN:VEVENT
UID:SEMINAR6433
SEQUENCE:0
DTSTAMP:20200529T131702Z
DTSTART:20200625T120000Z
DTEND:20200625T130000Z
STATUS:CONFIRMED
TRANSP:OPAQUE
LOCATION:
SUMMARY:Geometry and Topology Seminar: TBA
DESCRIPTION:TBA, \nTBA
END:VEVENT
BEGIN:VEVENT
UID:SEMINAR6414
SEQUENCE:0
DTSTAMP:20200529T131702Z
DTSTART:20201005T120000Z
DTEND:20201005T130000Z
STATUS:CONFIRMED
TRANSP:OPAQUE
LOCATION:
SUMMARY:Pure Maths Colloquium: TBA
DESCRIPTION:Andrea Mondino, University of Oxford\nTBA
END:VEVENT
BEGIN:VEVENT
UID:SEMINAR6429
SEQUENCE:0
DTSTAMP:20200529T131702Z
DTSTART:20201008T120500Z
DTEND:20201008T130500Z
STATUS:CONFIRMED
TRANSP:OPAQUE
LOCATION:
SUMMARY:Geometry and Topology Seminar: TBA
DESCRIPTION:Lawrence Mouillé, Rice University\nTBA
END:VEVENT
BEGIN:VEVENT
UID:SEMINAR6379
SEQUENCE:0
DTSTAMP:20200529T131702Z
DTSTART:20201015T120000Z
DTEND:20201015T130000Z
STATUS:CONFIRMED
TRANSP:OPAQUE
LOCATION:
SUMMARY:Geometry and Topology Seminar: TBA
DESCRIPTION:John Harvey, Swansea University\nTBA
END:VEVENT
BEGIN:VEVENT
UID:SEMINAR6412
SEQUENCE:0
DTSTAMP:20200529T131702Z
DTSTART:20201022T120000Z
DTEND:20201022T130000Z
STATUS:CONFIRMED
TRANSP:OPAQUE
LOCATION:
SUMMARY:Geometry and Topology Seminar: Rigidity of Wasserstein isometries
in closed Riemannian manifolds
DESCRIPTION:Jaime Santos, Universidad Autónoma de Madrid\nLet P2(M) be th
e space of probability measures on a Riemannian manifold M. Using the solu
tions to Monge-Kantorovich’s optimal transport problem it is\npossible t
o define a distance on P2(M), the so called L2−Wasserstein distance W2.
This distance reflects many geometrical properties of the manifold such as
: compactness, geodesics, and non-negative sectional curvature.\nIn this t
alk we will discuss some intrinsic properties of Wasserstein spaces, more
precisely we give a positive answer to the following question:\nIf two clo
sed Riemannian manifolds M, N are such that their corresponding Wasserstei
n spaces P2(M), P2(N) are isometric, does it follow then that M is isometr
ic to N?\nMoreover, if we assume that the Riemannian manifold has positive
sectional curvature we can also prove that the isometry groups of the man
ifold M and of the\nWasserstein space P2(M) coincide.
END:VEVENT
BEGIN:VEVENT
UID:SEMINAR6426
SEQUENCE:0
DTSTAMP:20200529T131702Z
DTSTART:20201029T130000Z
DTEND:20201029T140000Z
STATUS:CONFIRMED
TRANSP:OPAQUE
LOCATION:
SUMMARY:Geometry and Topology Seminar: TBA
DESCRIPTION:Martin Kerin, National University of Ireland, Galway\n
END:VEVENT
BEGIN:VEVENT
UID:SEMINAR6377
SEQUENCE:0
DTSTAMP:20200529T131702Z
DTSTART:20201105T130000Z
DTEND:20201105T140000Z
STATUS:CONFIRMED
TRANSP:OPAQUE
LOCATION:
SUMMARY:Geometry and Topology Seminar: TBA
DESCRIPTION:Luis Hernández-Lamoneda, CIMAT, Mexico\nTBA
END:VEVENT
BEGIN:VEVENT
UID:SEMINAR6316
SEQUENCE:0
DTSTAMP:20200529T131702Z
DTSTART:20201119T130000Z
DTEND:20201119T140000Z
STATUS:CONFIRMED
TRANSP:OPAQUE
LOCATION:
SUMMARY:Geometry and Topology Seminar: Symmetries of exotic negatively cur
ved manifolds
DESCRIPTION:Mauricio Bustamante, University of Cambridge\nLet N be a smoot
h manifold that is homeomorphic but not diffeomorphic to a closed hyperbol
ic manifold M. To what extent does N admit as much symmetry as M?. In this
talk, I wil show that it's possible to find N with maximal symmetry, i.e.
Isom(M) acts on N by isometries with respect to some negatively curved me
tric on N. For these examples, Isom(M) can be made arbitrarily large. On t
he other hand, one can also find N with little symmetry, i.e. no subgroup
of Isom(M) of “small” index acts by diffeomorphisms of N. The construc
tion of these examples incorporates a variety of techniques including smoo
thing theory and the Belolipetsky-Lubotzky method for constructing hyperbo
lic manifolds with a prescribed isometry group. This is joint work with Be
na Tshishiku.\n\n
END:VEVENT
BEGIN:VEVENT
UID:SEMINAR6389
SEQUENCE:0
DTSTAMP:20200529T131702Z
DTSTART:20210204T130500Z
DTEND:20210204T140500Z
STATUS:CONFIRMED
TRANSP:OPAQUE
LOCATION:
SUMMARY:Geometry and Topology Seminar: TBA
DESCRIPTION:Julian Scheuer (Cardiff), \n
END:VEVENT
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