BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Henri Guenancia (CNRS - Univ. Toulouse)
DTSTART;VALUE=DATE-TIME:20200508T150000Z
DTEND;VALUE=DATE-TIME:20200508T163000Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/1
DESCRIPTION:Title: Families of singular Kähler-Einstein metrics\nby Henri
Guenancia (CNRS - Univ. Toulouse) as part of CRM - Séminaire du CIRGET /
Géométrie et Topologie\n\n\nAbstract\nI will outline the main results a
nd ideas from a recent joint work with E. Di Nezza and V. Guedj. The gener
al theme is as follows: let p:X\\to Y be a holomorphic\, proper surjective
map from a complex Kähler space X and assume that the fibers X_y admit s
ome (possibly twisted) singular Kähler-Einstein metric. We show that the
potentials of these metrics admit uniform bounds when y varies in compact
subsets. If time permits\, I will mention a connection with an earlier wor
k (joint with J. Cao and M. Paun) on the psh variation of the Kähler-Eins
tein metric on families of manifolds of general type.\n
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ekaterina Amerik (Univ. Paris Sud)
DTSTART;VALUE=DATE-TIME:20200515T150000Z
DTEND;VALUE=DATE-TIME:20200515T163000Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/2
DESCRIPTION:Title: Around the cone conjecture for hyperkähler manifolds\n
by Ekaterina Amerik (Univ. Paris Sud) as part of CRM - Séminaire du CIRGE
T / Géométrie et Topologie\n\n\nAbstract\nThe Morrison-Kawamata cone con
jecture states that the automorphism group of a Calabi-Yau manifold acts w
ith finitely many orbits on the set of faces of its ample cone. I shall sk
etch its proof in the hyperkähler case with some emphasis on a statement
on Lie groups behind it. All results\nare joint work with Misha Verbitsky.
\n
END:VEVENT
BEGIN:VEVENT
SUMMARY:Patrick Orson (Boston College)
DTSTART;VALUE=DATE-TIME:20200522T150000Z
DTEND;VALUE=DATE-TIME:20200522T163000Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/3
DESCRIPTION:Title: Topologically embedding spheres in knot traces\nby Patr
ick Orson (Boston College) as part of CRM - Séminaire du CIRGET / Géomé
trie et Topologie\n\n\nAbstract\nKnot traces are smooth 4-manifolds with b
oundary\, that are homotopic to the 2-sphere\, and obtained by attaching a
2-handle to the 4-ball along a framed knot in the 3-sphere. I will give a
complete characterisation for when the generator of the second homotopy g
roup of a knot trace can be represented by a locally flat embedded 2-spher
e with abelian exterior fundamental group. The answer is in terms of\nclas
sical and computable invariants of the knot. This is a joint project with
Feller\, Miller\, Nagel\, Powell\, and Ray.\n
END:VEVENT
BEGIN:VEVENT
SUMMARY:Lukas Lewark (Univ. Regensburg)
DTSTART;VALUE=DATE-TIME:20200529T150000Z
DTEND;VALUE=DATE-TIME:20200529T163000Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/4
DESCRIPTION:Title: Squeezed knots\nby Lukas Lewark (Univ. Regensburg) as p
art of CRM - Séminaire du CIRGET / Géométrie et Topologie\n\n\nAbstract
\nA knot is called squeezed if it is a slice of a smooth cobordism of mini
mal genus between a positive knot and a negative knot. Most small knots ar
e squeezed\, as are many classes of knots\, such as alternating knots. How
ever\, Khovanov homology and related tools may obstruct squeezedness. This
is joint work in progress with Peter Feller and Andrew Lobb.\n
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ben Weinkove (Northwestern Univ.)
DTSTART;VALUE=DATE-TIME:20200605T150000Z
DTEND;VALUE=DATE-TIME:20200605T163000Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/5
DESCRIPTION:Title: The Chern-Ricci flow\nby Ben Weinkove (Northwestern Uni
v.) as part of CRM - Séminaire du CIRGET / Géométrie et Topologie\n\n\n
Abstract\nThe Chern-Ricci flow is a flow of Hermitian metrics by their Che
rn-Ricci form. It generalizes the Kahler-Ricci flow to the setting of non
-Kahler metrics on complex manifolds. I will give an overview of known re
sults for this flow and describe some open problems.\n
END:VEVENT
BEGIN:VEVENT
SUMMARY:Eiji Inoue (Tokyo Univ.)
DTSTART;VALUE=DATE-TIME:20200612T150000Z
DTEND;VALUE=DATE-TIME:20200612T163000Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/6
DESCRIPTION:Title: mu-cscK metrics and muK-stability of polarized manifold
s\nby Eiji Inoue (Tokyo Univ.) as part of CRM - Séminaire du CIRGET / Gé
ométrie et Topologie\n\n\nAbstract\nI will talk about a framework unifyin
g both the frameworks on "cscK metrics and K-stability of polarized manifo
lds" and "Kahler-Ricci solitons and modified K-stability of Fano manifolds
". There are two divided contents as follows. \n\n1. Formulation of mu-csc
K metrics and brief remarks on results parallel to the usual canonical met
rics. On some attractive special features/phenomenon of mu-cscK metrics\;
"extremal limit" and "phase transition". On a little examples. \n\n2. How
to formulate/derive/express mu-Futaki invariant of test configurations wit
h general singularities. On a counterpart of CM line bundle for muK-stabil
ity. \n\nIf time permits\, I will also propose future problems/projects an
d its applications\, especially towards the algebraic moduli problems of F
ano varieties admitting Kahler-Ricci solitons.\n
END:VEVENT
BEGIN:VEVENT
SUMMARY:Martin Bobb (UT Austin)
DTSTART;VALUE=DATE-TIME:20200626T150000Z
DTEND;VALUE=DATE-TIME:20200626T163000Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/7
DESCRIPTION:Title: Decomposition along flats for convex projective manifol
ds\nby Martin Bobb (UT Austin) as part of CRM - Séminaire du CIRGET / Gé
ométrie et Topologie\n\n\nAbstract\nReal convex projective geometry gener
alizes hyperbolic geometry in a way that allows for interesting deformatio
n theory and also aspects of non-positive curvature. In this talk I will i
ntroduce convex projective geometry\, and we will discuss a natural decomp
osition of compact convex projective manifolds along their codimension-1 f
lat substructures. This extends a celebrated 2006 result of Benoist: a 'ge
ometric JSJ-decomposition' for compact convex projective 3-manifolds to ma
nifolds of every dimension (greater than 2).\n
END:VEVENT
BEGIN:VEVENT
SUMMARY:Vaibhav Gadre (Univ. of Glasgow)
DTSTART;VALUE=DATE-TIME:20200619T150000Z
DTEND;VALUE=DATE-TIME:20200619T163000Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/8
DESCRIPTION:Title: Statistical hyperbolicity of Teichmuller spaces\nby Vai
bhav Gadre (Univ. of Glasgow) as part of CRM - Séminaire du CIRGET / Géo
métrie et Topologie\n\n\nAbstract\nThe notion of statistical hyperbolicit
y introduced by Duchin-Lelievre-Mooney encapsulates whether a space is on
average hyperbolic at large scales\, that is\, whether average distance be
tween pairs of points on large spheres of radius R is 2R. In this talk\, I
will explain how Teichmuller spaces are statistically hyperbolic with res
pect to stationary measures arising random walks on mapping class groups.
This is joint work with Aitor Azemar and Luke Jeffreys and extends previou
s work of Dowdall-Duchin-Masur.\n
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gabriele Mondello (Univ. di Roma "Sapienza")
DTSTART;VALUE=DATE-TIME:20200710T150000Z
DTEND;VALUE=DATE-TIME:20200710T161500Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/9
DESCRIPTION:Title: On spherical surfaces of genus 1 with 1 conical point\n
by Gabriele Mondello (Univ. di Roma "Sapienza") as part of CRM - Séminair
e du CIRGET / Géométrie et Topologie\n\n\nAbstract\nA spherical metric o
n a surface is a metric of constant curvature 1.\nSuch a metric has a coni
cal point x of angle $2\\pi\\theta$ if it has vanishing order $(\\theta-1)
$ at x.\nA spherical metric in an assigned conformal class can be viewed o
n one hand as a solution of a suitable singular Liouville equation.\nOn th
e other hand\, when the conformal class is not prescribed\, isotopy classe
s of spherical metrics can be considered as flat (SO(3\,R)\,S^2)-structure
\, and so their moduli space has a natural finite-dimensional real-analyti
c structure.\n\nI will discuss recent results on the topology of such modu
li space of spherical metrics with conical points of assigned angles.\nI w
ill then focus on the case of genus 1 with 1 conical point.\n\nThis is joi
nt work with Eremenko-Panov and with Eremenko-Gabrielov-Panov.\n
END:VEVENT
BEGIN:VEVENT
SUMMARY:Nicolina Istrati (Tel Aviv Univ.)
DTSTART;VALUE=DATE-TIME:20200703T150000Z
DTEND;VALUE=DATE-TIME:20200703T161500Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/10
DESCRIPTION:Title: Variational problems in conformal geometry\nby Nicolina
Istrati (Tel Aviv Univ.) as part of CRM - Séminaire du CIRGET / Géomét
rie et Topologie\n\n\nAbstract\nI will present several natural functionals
defined on a conformal class of almost Hermitian metrics on a compact man
ifold\, and I will establish their Euler-Lagrange equations. I will show t
hat the Gauduchon metrics appear naturally as the unique extremal metrics
of one such functional. Next\, a new class of metrics will be introduced\,
also appearing as extremal in complex dimension two. I will show that the
se new metrics\, while not Gauduchon in general\, give again unique repres
entatives\, up to constant multiples\, of conformal classes of almost Herm
itian metrics. This is joint work with D. Angella\, A. Otiman and N. Tardi
ni.\n
END:VEVENT
BEGIN:VEVENT
SUMMARY:Joshua Howie (UC Davis)
DTSTART;VALUE=DATE-TIME:20200717T150000Z
DTEND;VALUE=DATE-TIME:20200717T161500Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/11
DESCRIPTION:by Joshua Howie (UC Davis) as part of CRM - Séminaire du CIRG
ET / Géométrie et Topologie\n\nAbstract: TBA\n
END:VEVENT
BEGIN:VEVENT
SUMMARY:Livio Liechti (Université de Fribourg)
DTSTART;VALUE=DATE-TIME:20200724T150000Z
DTEND;VALUE=DATE-TIME:20200724T161500Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/12
DESCRIPTION:Title: Divide knots of maximal genus defect\nby Livio Liechti
(Université de Fribourg) as part of CRM - Séminaire du CIRGET / Géomét
rie et Topologie\n\nAbstract: TBA\n
END:VEVENT
BEGIN:VEVENT
SUMMARY:Andrew Lobb (University of Durham\, UK)
DTSTART;VALUE=DATE-TIME:20200911T150000Z
DTEND;VALUE=DATE-TIME:20200911T161500Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/13
DESCRIPTION:Title: The rectangular peg problem\nby Andrew Lobb (University
of Durham\, UK) as part of CRM - Séminaire du CIRGET / Géométrie et To
pologie\n\nAbstract: TBA\n
END:VEVENT
BEGIN:VEVENT
SUMMARY:Carlo Scarpa (SISSA\, Italy)
DTSTART;VALUE=DATE-TIME:20200918T150000Z
DTEND;VALUE=DATE-TIME:20200918T161500Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/14
DESCRIPTION:Title: The Hitchin-cscK system\nby Carlo Scarpa (SISSA\, Italy
) as part of CRM - Séminaire du CIRGET / Géométrie et Topologie\n\n\nAb
stract\nA classic result in the study of Kähler metrics with special curv
ature properties is that the cscK equation can be realized as the moment m
ap equation for an infinite-dimensional Kähler reduction. We present a na
tural hyperkähler extension of this moment map picture\, obtaining a new
system of equations reminiscent of Hitchin's equations for Higgs bundles.
We will discuss some recent existence results\, particularly obstructions
to solutions to the problem.\n
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jonathan Johnson (University of Texas at Austin\, US)
DTSTART;VALUE=DATE-TIME:20200925T150000Z
DTEND;VALUE=DATE-TIME:20200925T161500Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/15
DESCRIPTION:Title: Bi-Orderability and Pretzel Knots\nby Jonathan Johnson
(University of Texas at Austin\, US) as part of CRM - Séminaire du CIRGET
/ Géométrie et Topologie\n\nInteractive livestream: https://uqam.zoom.u
s/j/98999725241\n\nAbstract\nThis talk concerns the bi-orderability of pre
tzel knot groups which appears to have a weird connection to the Heegaard
Floer properties of the cyclic branched covers of the knots. In a recent p
aper\, several new examples of bi-orderable pretzel knots are found. We\nw
ill discuss these results and some of their implications to this strange c
oincidence of orderability and Heegaard Floer.\n
URL:https://uqam.zoom.us/j/98999725241
END:VEVENT
BEGIN:VEVENT
SUMMARY:Junyan Cao (Université de Nice\, France)
DTSTART;VALUE=DATE-TIME:20201002T150000Z
DTEND;VALUE=DATE-TIME:20201002T161500Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/16
DESCRIPTION:by Junyan Cao (Université de Nice\, France) as part of CRM -
Séminaire du CIRGET / Géométrie et Topologie\n\nInteractive livestream:
https://uqam.zoom.us/j/98999725241\nAbstract: TBA\n
URL:https://uqam.zoom.us/j/98999725241
END:VEVENT
BEGIN:VEVENT
SUMMARY:Christina Tonnesen-Friedman (Union College\, US)
DTSTART;VALUE=DATE-TIME:20201009T150000Z
DTEND;VALUE=DATE-TIME:20201009T161500Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/17
DESCRIPTION:by Christina Tonnesen-Friedman (Union College\, US) as part of
CRM - Séminaire du CIRGET / Géométrie et Topologie\n\nInteractive live
stream: https://uqam.zoom.us/j/98999725241\nAbstract: TBA\n
URL:https://uqam.zoom.us/j/98999725241
END:VEVENT
BEGIN:VEVENT
SUMMARY:Yi Ni (Caltech\, US)
DTSTART;VALUE=DATE-TIME:20201016T150000Z
DTEND;VALUE=DATE-TIME:20201016T161500Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/18
DESCRIPTION:Title: Seifert fibered surgeries on hyperbolic fibered knots\n
by Yi Ni (Caltech\, US) as part of CRM - Séminaire du CIRGET / Géométri
e et Topologie\n\nInteractive livestream: https://uqam.zoom.us/j/989997252
41\nAbstract: TBA\n
URL:https://uqam.zoom.us/j/98999725241
END:VEVENT
BEGIN:VEVENT
SUMMARY:Aru Ray (MPIM Bonn\, Germany)
DTSTART;VALUE=DATE-TIME:20201023T150000Z
DTEND;VALUE=DATE-TIME:20201023T161500Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/19
DESCRIPTION:by Aru Ray (MPIM Bonn\, Germany) as part of CRM - Séminaire d
u CIRGET / Géométrie et Topologie\n\nInteractive livestream: https://uqa
m.zoom.us/j/98999725241\nAbstract: TBA\n
URL:https://uqam.zoom.us/j/98999725241
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hugues Auvray (Paris Orsay\, France)
DTSTART;VALUE=DATE-TIME:20201030T150000Z
DTEND;VALUE=DATE-TIME:20201030T161500Z
DTSTAMP;VALUE=DATE-TIME:20200921T062251Z
UID:CIRGET/20
DESCRIPTION:by Hugues Auvray (Paris Orsay\, France) as part of CRM - Sémi
naire du CIRGET / Géométrie et Topologie\n\nInteractive livestream: http
s://uqam.zoom.us/j/98999725241\nAbstract: TBA\n
URL:https://uqam.zoom.us/j/98999725241
END:VEVENT
END:VCALENDAR