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BEGIN:VEVENT
SUMMARY:Marco Brunella and the curvature of canonical line bundles
DTSTART;VALUE=DATE-TIME:20140929T080000Z
DTEND;VALUE=DATE-TIME:20140929T090000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-926@indico.math.cnrs.fr
DESCRIPTION:Speakers: Jean-Pierre DEMAILLY (Grenoble)\nThe talk will prese
nt some striking results of Marco Brunella concerning the curvature of can
onical and anticanonical line bundles of compact Kähler manifolds\, and o
f foliations on such manifolds. These results all contain very deep ideas\
, and several ones are connected to important unsolved conjectures. We wil
l try to give an overview of some of them.\n\nhttps://indico.math.cnrs.fr/
event/201/contributions/926/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/926/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The bi-disc theorem
DTSTART;VALUE=DATE-TIME:20141002T120000Z
DTEND;VALUE=DATE-TIME:20141002T130000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-927@indico.math.cnrs.fr
DESCRIPTION:Speakers: Michael McQUILLAN (Roma)\nThe identification of surf
aces with negative Kodaira dimension which are not fibred in rational curv
es with the natural foliations on bi-disc quotients can reasonably be cons
idered the centre piece of the classification of foliated surfaces. It was
very much a collaborative effort with Marco\, and\, curiously\, I have ne
ver given a talk specifically devoted to this theorem.\n\nhttps://indico.m
ath.cnrs.fr/event/201/contributions/927/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/927/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Marco and the theory of Anosov flows in dimension 3
DTSTART;VALUE=DATE-TIME:20141002T080000Z
DTEND;VALUE=DATE-TIME:20141002T090000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-928@indico.math.cnrs.fr
DESCRIPTION:Speakers: Etienne GHYS (Lyon)\nAt the beginning of his career\
, Marco Brunella published five papers related to Anosov flows in dimensio
n 3.\nThese papers had a great influence on the subsequent development of
the theory. \nI would like to review these papers and present the present
status of the question.\n\nhttps://indico.math.cnrs.fr/event/201/contribut
ions/928/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/928/
END:VEVENT
BEGIN:VEVENT
SUMMARY:On cohomological invariants of complex manifolds
DTSTART;VALUE=DATE-TIME:20141002T133000Z
DTEND;VALUE=DATE-TIME:20141002T143000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-929@indico.math.cnrs.fr
DESCRIPTION:Speakers: Adriano TOMASSINI (Parma)\nWe will focus on algebrai
c aspects of the $\\delta_1\\delta_2$-Lemma for bounded double complexes\,
characterizing it in terms of special cohomologies. \nWe will apply such
a result to complex and symplectic manifolds.\nWe will also report on some
results on Dolbeault-Massey triple products.\n\nhttps://indico.math.cnrs.
fr/event/201/contributions/929/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/929/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Points singuliers de feuilletages holomorphes en dimension 3.
DTSTART;VALUE=DATE-TIME:20140930T080000Z
DTEND;VALUE=DATE-TIME:20140930T090000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-930@indico.math.cnrs.fr
DESCRIPTION:Speakers: Dominique CERVEAU (Rennes)\nIL s'agit d'un travail a
vec Alcides Lins neto et Marianna Vago où l'on donne une description des
types de singularités modulo la connaissance de leur partie initiale.\n\n
https://indico.math.cnrs.fr/event/201/contributions/930/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/930/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Brunella's Local Alternative
DTSTART;VALUE=DATE-TIME:20141001T072000Z
DTEND;VALUE=DATE-TIME:20141001T075000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-931@indico.math.cnrs.fr
DESCRIPTION:Speakers: Marianna RAVARA VAGO (Rennes)\nIt is a local version
of a conjecture of Brunella which says that a codimension 1 foliation in
the projective three-dimensional space P^3 either has an invariant algebra
ic surface or each leaf is sub-foliated by a one-dimensional foliation. In
this local take\, we have the following "local conjecture": a germ of hol
omorphic codimension 1 foliation in C^3\,0 either possesses a germ of anal
ytic invariant surface\, or there exists a neighborhood of the origin wher
ein each leaf contains a germ of analytic curve. We give a positive answer
to this local conjecture for certain types of foliations.\n\nhttps://indi
co.math.cnrs.fr/event/201/contributions/931/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/931/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Complete vector fields on affine surfaces
DTSTART;VALUE=DATE-TIME:20141002T072000Z
DTEND;VALUE=DATE-TIME:20141002T075000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-932@indico.math.cnrs.fr
DESCRIPTION:Speakers: Matthias LEUENBERGER (Bern)\nsee joint pdf.\n\nhttps
://indico.math.cnrs.fr/event/201/contributions/932/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/932/
END:VEVENT
BEGIN:VEVENT
SUMMARY:From character varieties to isoperiodic foliations: a transfer pri
nciple
DTSTART;VALUE=DATE-TIME:20140930T133000Z
DTEND;VALUE=DATE-TIME:20140930T143000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-933@indico.math.cnrs.fr
DESCRIPTION:Speakers: Bertrand DEROIN (Paris)\nSchiffer variations are sur
gery operations that takes an abelian differential on a curve to another o
ne with the same periods. Viewed in the moduli space of abelian differenti
als of a fixed genus g>=2\, they draw a complex algebraic foliation of dim
ension 2g-3\, called the isoperiodic foliation. Its transverse structure i
s modelled on an open set contained in the group of complex periods\, on w
hich the mapping class group acts via the symplectic group. We will see th
at the (rich) dynamical properties of this latter are also satisfied by th
e isoperiodic foliation: this phenomenon is what we call the transfer prin
ciple. The fact that it holds relies on the connectivity of certain moduli
spaces of abelian differentials on curves with prescribed periods.\nThis
is a work in collaboration with Gabriel Calsamiglia and Stefano Francavigl
ia.\n\nhttps://indico.math.cnrs.fr/event/201/contributions/933/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/933/
END:VEVENT
BEGIN:VEVENT
SUMMARY:From umbilical foliations to the plurisubharmonic variation of the
Poincaré metric
DTSTART;VALUE=DATE-TIME:20140930T120000Z
DTEND;VALUE=DATE-TIME:20140930T130000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-934@indico.math.cnrs.fr
DESCRIPTION:Speakers: Jorge Vitorio PEREIRA (IMPA)\nhttps://indico.math.cn
rs.fr/event/201/contributions/934/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/934/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holomorphic foliations and invariant currents.
DTSTART;VALUE=DATE-TIME:20140929T133000Z
DTEND;VALUE=DATE-TIME:20140929T143000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-935@indico.math.cnrs.fr
DESCRIPTION:Speakers: Frédéric TOUZET (Rennes)\nIn this talk\, we will p
oint out some numerical properties of codimension 1 foliations on projecti
ve manifolds which ensure the existence/inexistence of holonomy invarian
t positive current.\n\nhttps://indico.math.cnrs.fr/event/201/contributions
/935/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/935/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Taxonomy of Class VII Surfaces
DTSTART;VALUE=DATE-TIME:20140929T120000Z
DTEND;VALUE=DATE-TIME:20140929T130000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-936@indico.math.cnrs.fr
DESCRIPTION:Speakers: Matei TOMA (Nancy)\nIn Kodaira's classification of c
ompact complex surfaces Class VII hasn't been yet completely understood. A
n important part of Marco Brunella's mathematical work deals with dynamica
l properties of class VII surfaces. Part of this work was published posthu
mously.\nIn this talk we present new ways of subclassifying class VII surf
aces\, in which Marco's ideas and results play an important role. We also
sketch the first steps of a tentative study of these surfaces based on the
properties of their closed positive currents (work in progress together w
ith Ionut Chiose).\n\nhttps://indico.math.cnrs.fr/event/201/contributions/
936/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/936/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Foliations with a compact leaf
DTSTART;VALUE=DATE-TIME:20141001T093000Z
DTEND;VALUE=DATE-TIME:20141001T103000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-937@indico.math.cnrs.fr
DESCRIPTION:Speakers: Frank LORAY (Rennes)\nWe investigate foliations on p
rojective surfaces having a compact leaf.\nThis is a joint work in progres
s with Benoît Claudon\, Jorge Vitorio Pereira and Frédéric Touzet.\n\nh
ttps://indico.math.cnrs.fr/event/201/contributions/937/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/937/
END:VEVENT
BEGIN:VEVENT
SUMMARY:On bihermitian structures on Kato surfaces
DTSTART;VALUE=DATE-TIME:20141003T093000Z
DTEND;VALUE=DATE-TIME:20141003T103000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-938@indico.math.cnrs.fr
DESCRIPTION:Speakers: Akira FUJIKI (Osaka)\nThere has been much works rece
ntly on bihermitian structures on compact complex surfaces\, especially in
the Kähler case in relation with generalized Kähler geometry. On the ot
her hand \, for non-Kähler surfaces we have so far still rather few examp
les. Recently\, however\, Apostolov\, Bailey and Dloussky have obtained a
new nice sufficient condition for their existence. In this talk I will exp
lain how their resut can produce\, together with the result of Brunella on
locally conformally Kähler metrics on Kato surfaces\, new examples of bi
hermitian structures on some parabolic Inoue surfaces and intermediate Kat
o surfaces.\nThis is a joint work with M. Pontecorvo.\n\nhttps://indico.ma
th.cnrs.fr/event/201/contributions/938/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/938/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Index theorems and geodesic flow for meromorphic connections along
foliations
DTSTART;VALUE=DATE-TIME:20140929T093000Z
DTEND;VALUE=DATE-TIME:20140929T103000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-939@indico.math.cnrs.fr
DESCRIPTION:Speakers: Marco ABATE (Pisa)\nThe study of meromorphic connect
ions on Riemann surfaces is a classical topic\, related for instance to th
e 21st Hilbert problem.\nIn this talk I shall introduce a novel point of v
iew\, with unexpected analytic\, geometric and dynamical applications. Mor
e precisely\, I shall show how to associate to holomorphic maps having a p
ositive-dimensional fixed point set a foliation in Riemann surfaces with m
eromorphic connections along the leaves\, and how to use this structure to
prove several index theorems generalizing and extending both the classica
l holomorphic Lefschetz index theorem and the Camacho-Sad index theorems f
or foliations. Furthermore\, I shall describe how to study with analytical
and geometrical techniques the geodesic flow associated to a meromorphic
connection\, with the aim of describing the asymptotic behavior of the rea
l geodesic defined by the connection. Finally\, I shall describe a few app
lications of these results to the study of the dynamics of germs tangent t
o the identity\, to the study of the flow of homogeneous vector fields\, a
nd to the study of meromorphic self-maps of the complex projective space.\
n\nhttps://indico.math.cnrs.fr/event/201/contributions/939/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/939/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Foliations and webs inducing Galois coverings
DTSTART;VALUE=DATE-TIME:20141002T093000Z
DTEND;VALUE=DATE-TIME:20141002T103000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-940@indico.math.cnrs.fr
DESCRIPTION:Speakers: Marcel NICOLAU (Barcelona)\nMotivated by previous wo
rk of Cerveau and Déserti\, we introduce the notion of Galois holomorphic
foliation\non the complex projective space as those whose Gauss map is a
Galois covering when restricted to an appropriate Zariski open subset.\nWe
characterize Galois foliations on $\\mathbb P^2$ belonging to certain cla
sses\, which include homogeneous\nfoliations and we give a geometric chara
cterization of Galois foliations in terms of their inflection divisor and
their singularities.\n\nhttps://indico.math.cnrs.fr/event/201/contribution
s/940/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/940/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A generalization of Malmquist's theorem
DTSTART;VALUE=DATE-TIME:20140930T150000Z
DTEND;VALUE=DATE-TIME:20140930T160000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-941@indico.math.cnrs.fr
DESCRIPTION:Speakers: Adolfo GUILLOT (Cuernavaca)\nThe centennial theorem
of Malmquist states that a non-autonomous algebraic ordinary differential
equation of the first order having an entire solution is in fact a Riccati
equation. We will speak about related results concerning algebraic differ
ential equations having at least one single-valued solution.\n\nhttps://in
dico.math.cnrs.fr/event/201/contributions/941/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/941/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Green-Griffiths locus of quotients of bounded symmetric domain
s
DTSTART;VALUE=DATE-TIME:20141003T080000Z
DTEND;VALUE=DATE-TIME:20141003T090000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-942@indico.math.cnrs.fr
DESCRIPTION:Speakers: Simone DIVERIO (Paris)\nThe Green-Griffiths locus is
a closed subset of a compact projective manifold which contains the image
of all entire curves contained in the manifold. In this talk we shall des
cribe this locus for compact quotients of bounded symmetric domains. It tu
rns out that the following dichotomy holds : either the uniformizing bound
ed symmetric domain is the ball and the Green-Griffiths locus is empty\, o
r the Green-Griffiths locus is the whole manifold. This is a joint work wi
th E. Rousseau.\n\nhttps://indico.math.cnrs.fr/event/201/contributions/942
/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/942/
END:VEVENT
BEGIN:VEVENT
SUMMARY:On deformations of elliptic fibrations\, according to Cayley\, Cre
mona\, Halphen and Brunella.
DTSTART;VALUE=DATE-TIME:20140929T150000Z
DTEND;VALUE=DATE-TIME:20140929T160000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-943@indico.math.cnrs.fr
DESCRIPTION:Speakers: Luis Gustavo MENDES (Porto Alegre)\nIn the first pa
rt of the talk I'll take the risk of doing history of mathematics\, pres
enting results of Cayley\, Cremona and Halphen on deformations of elliptic
fibrations (without sections). After\, I'll show some experiments of d
egenerations of the configurations treated by these authors. At last\
, I'll give some ideas of Brunella's general result on deformati
ons of elliptic fibrations and singular holomorphic foliations\, which
is not widely diffused.\n\nhttps://indico.math.cnrs.fr/event/201/contribu
tions/943/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/943/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Circle actions on the 7-sphere with unbounded periods and non-line
arizable multicentres
DTSTART;VALUE=DATE-TIME:20140930T093000Z
DTEND;VALUE=DATE-TIME:20140930T103000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-944@indico.math.cnrs.fr
DESCRIPTION:Speakers: Massimo VILLARINI (Modena)\nWe give an example of a
free circle action on the 7-dimensional sphere whose orbits have unbounded
lenghts (equivalently: unbounded periods).As an application we construct
a smooth vector field X in a neighbourhood U of the origin in the 8-dimens
ional real space such that : U - (0) is foliated by closed integrale curve
s\, the differential DX(0) generate a 1-parametri group of rotations\, bu
t X is not orbitally equivalent to its linearization at the origin\, hence
proving that Poincare' Centre Theorem\, true for planar non-degenerate ce
nters is not generalizable in 8 dimensioni.\n\nhttps://indico.math.cnrs.fr
/event/201/contributions/944/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/944/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Germs of singular holomorphic two dimensional foliations
DTSTART;VALUE=DATE-TIME:20141002T150000Z
DTEND;VALUE=DATE-TIME:20141002T160000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-945@indico.math.cnrs.fr
DESCRIPTION:Speakers: Alcides LINS NETO (Rio de Janeiro)\nsee joint pdf.\n
\nhttps://indico.math.cnrs.fr/event/201/contributions/945/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/945/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Kähler threefolds without subvarieties
DTSTART;VALUE=DATE-TIME:20141001T080000Z
DTEND;VALUE=DATE-TIME:20141001T090000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-946@indico.math.cnrs.fr
DESCRIPTION:Speakers: Misha VERBITSKY (Moscow)\nLet $M$ be a compact Kahle
r manifold without non-trivial complex subvarieties. Using Brunella's alte
rnative for holomorphic foliations\, Nadel's vanishing theorem and Demaill
y's regularization of positive currents\, we prove that $M$ is a compact t
orus. This is a joint work with F. Campana and J.-P. Demailly.\n\nhttps://
indico.math.cnrs.fr/event/201/contributions/946/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/946/
END:VEVENT
BEGIN:VEVENT
SUMMARY:On periodic orbits in complex billiards
DTSTART;VALUE=DATE-TIME:20141001T120000Z
DTEND;VALUE=DATE-TIME:20141001T130000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-947@indico.math.cnrs.fr
DESCRIPTION:Speakers: Alexey GLUTSYUK (Lyon and Moscow)\nA conjecture of V
ictor Ivrii (1980) says that in every billiard with smooth boundary the se
t of periodic orbits has measure zero. This conjecture is closely related
to spectral theory. Its particular case for triangular orbits was prov
ed by M. Rychlik (1989)\, Ya. Vorobets (1994) and other mathematician
s\, and for quadrilateral orbits in our joint work with Yu. Kudryashov (20
12). \nWe present a new approach to planar Ivrii's conjecture for billia
rds with piecewise-analytic boundary: to study its complexified version wi
th reflections from holomorphic curves. The direct complexification of Iv
rii's conjecture is false in general. \nIt would be interesting for real
applications to classify the counterexamples: complex billiards with open
sets of periodic orbits of a given period. We will show that the only "
nontrivial" counterexamples with four reflections are formed by couples of
confocal conics. We will discuss a small result concerning odd number of
reflections. We provide applications of these results to real billiards\,
including Plakhov's Invisibility Conjecture and Tabachnikov's commuting bi
lliard problem.\n\nhttps://indico.math.cnrs.fr/event/201/contributions/947
/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/947/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Smooth foliations on compact homogeneous kähler varieties
DTSTART;VALUE=DATE-TIME:20141003T072000Z
DTEND;VALUE=DATE-TIME:20141003T075000Z
DTSTAMP;VALUE=DATE-TIME:20191017T224826Z
UID:indico-contribution-201-948@indico.math.cnrs.fr
DESCRIPTION:Speakers: Federico LO BIANCO (Rennes)\nsee joint pdf.\n\nhttps
://indico.math.cnrs.fr/event/201/contributions/948/
LOCATION:International Center for Theoretical Physics Adriatico Building\,
Kastler Lecture Hall
URL:https://indico.math.cnrs.fr/event/201/contributions/948/
END:VEVENT
END:VCALENDAR