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Dominique Cerveau - Holomorphic foliations of codimension one, elementary theory (Part 1)
/ Fanny Bastien
/ 18-06-2012
/ Canal-u.fr
Cerveau Dominique
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Voir le résumé
In
this introductory course I will present the basic notions, both local
and global, using classical examples. I will explain statements in
connection with the resolution of singularities with for instance the
singular Frobenius Theorem or the Liouvilian integration. I will also
present some open questions which I will motivate by examples.
Dans
ce cours introductif je m’attacherai à présenter les notions de base
tant locales que globales au travers d’exemples classiques. J’aborderai
des énoncés liés à la résolution des singularités avec par exemple le
théorème de Frobenius singulier ou l’intégration Liouvillienne. Je
présenterai aussi quelques problèmes ouverts que je motiverai encore au
travers d’exemples.
Mot(s) clés libre(s) : mathématiques, Grenoble, école d'été, courbes, institut fourier, summer school, feuilletages, holomorphic foliations
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Julien Duval - Kobayashi pseudo-metrics, entire curves and hyperbolicity of algebraic varieties 1/2
/ Fanny Bastien
/ 28-06-2012
/ Canal-u.fr
Duval Julien
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Voir le résumé
indisponible Mot(s) clés libre(s) : mathématiques, Grenoble, école d'été, institut fourier, summer school, feuilletages, COURBES PSEUDOHOLOMORPHES
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Julien Duval - Kobayashi pseudo-metrics, entire curves and hyperbolicity of algebraic varieties 2/2
/ Fanny Bastien
/ 29-06-2012
/ Canal-u.fr
Duval Julien
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Voir le résumé
indisponible Mot(s) clés libre(s) : mathématiques, Grenoble, école d'été, institut fourier, summer school, feuilletages, COURBES PSEUDOHOLOMORPHES
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Franc Forstnerič - Non singular holomorphic foliations on Stein manifolds (Part 1)
/ Fanny Bastien
/ 19-06-2012
/ Canal-u.fr
Forstnerič Franc
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Voir le résumé
A nonsingular holomorphic foliation of codimension on a complex manifold is locally given by the level sets of a holomorphic submersion to the Euclidean space . If
is a Stein manifold, there also exist plenty of global foliations of
this form, so long as there are no topological obstructions. More
precisely, if then any -tuple of pointwise linearly independent (1,0)-forms can be continuously deformed to a -tuple of differentials where is a holomorphic submersion of to . Such a submersion always exists if is no more than the integer part of . More generally, if is a complex vector subbundle of the tangent bundle such that is a flat bundle, then is homotopic (through complex vector subbundles of ) to an integrable subbundle, i.e., to the tangent bundle of a nonsingular holomorphic foliation on .
I will prove these results and discuss open problems, the most
interesting one of them being related to a conjecture of Bogomolov. Mot(s) clés libre(s) : mathématiques, Grenoble, école d'été, courbes, institut fourier, summer school, feuilletages, holomorphic foliations
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Serguei Ivachkovitch - Method of pseudoholomorphic curves and applications (Part 3)
/ Fanny Bastien
/ 28-06-2012
/ Canal-u.fr
Ivachkovitch Serguei
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Voir le résumé
The method of « pseudoholomorphic » curves proved itself to be extremely useful in different fields. In symplectic topology, for instance Gromov’s Nonsqueezing Theorem, Arnold’s conjecture and the Floer homology, the Gromov-Witten invariants. In complex analysis and geometry, for instane polynomial hulls of totally real surfaces, envelopes of meromorphy, holomorphic foliations. We shall develop the theory of complex curves in almost complex manifolds and discuss some of these applications in our lectures. Mot(s) clés libre(s) : mathématiques, Grenoble, école d'été, institut fourier, summer school, feuilletages, COURBES PSEUDOHOLOMORPHES
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François Lalonde - Applications of Quantum homology to Symplectic Topology (Part 1)
/ Fanny Bastien
/ 03-07-2012
/ Canal-u.fr
Lalonde François
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Voir le résumé
The
first two lectures will present the fundamental results of symplectic
topology : basic definitions, Moser’s lemma, normal forms of the
symplectic structure near symplectic and Lagrangian submanifolds,
characterization of Hamiltonian fibrations over any CW-complex. The
third course will give the application of quantum homology to the
splitting of the rational cohomology ring of any Hamiltonian fibration
over S2, a generalization of a result of Deligne in the algebraic case
and of Kirwan in the toric case. The fourth course will give the
application of the quantum homology of a Lagrangian submanifold to the
proof of the triviality of the monodromy of a weakly exact Lagrangian
submanifold in any symplectic manifold. Mot(s) clés libre(s) : mathématiques, Grenoble, école d'été, institut fourier, summer school, feuilletages, COURBES PSEUDOHOLOMORPHES
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Alexandre Sukhov - J-complex curves: some applications (Part 3)
/ Fanny Bastien
/ 27-06-2012
/ Canal-u.fr
Sukhov Alexandre
Voir le résumé
Voir le résumé
We
will focus in our lectures on the following : 1. J-complex discs in
almost complex manifolds : general properties. Linearization and
compactness. Gromov’s method : the Fredholm alternative for the d-bar
operator. Attaching a complex disc to a Lagrangian manifold.
Application : exotic symplectic structures. Hulls of totally real
manifolds : Alexander’s theorem. 2. Real surfaces in (almost) complex
surfaces. Filling real 2-spheres by a Levi-flat hypersurface (Bedford
-Gaveau-Gromov theorem). Some applications. Symplectic and contact
structures. Reeb foliation and the Weinsten conjecture. Hofer’s proof of
the Weinstein conjecture. 3. J-complex lines and hyperbolicity. The KAM
theory and Moser’s stability theorem for entire J-complex curves in
tori. Global deformation and Bangert’s theorem. Mot(s) clés libre(s) : mathématiques, Grenoble, école d'été, institut fourier, summer school, feuilletages, COURBES PSEUDOHOLOMORPHES
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Alexandre Sukhov - J-complex curves: some applications (Part 4)
/ Fanny Bastien
/ 28-06-2012
/ Canal-u.fr
Sukhov Alexandre
Voir le résumé
Voir le résumé
We
will focus in our lectures on the following : 1. J-complex discs in
almost complex manifolds : general properties. Linearization and
compactness. Gromov’s method : the Fredholm alternative for the d-bar
operator. Attaching a complex disc to a Lagrangian manifold.
Application : exotic symplectic structures. Hulls of totally real
manifolds : Alexander’s theorem. 2. Real surfaces in (almost) complex
surfaces. Filling real 2-spheres by a Levi-flat hypersurface (Bedford
-Gaveau-Gromov theorem). Some applications. Symplectic and contact
structures. Reeb foliation and the Weinsten conjecture. Hofer’s proof of
the Weinstein conjecture. 3. J-complex lines and hyperbolicity. The KAM
theory and Moser’s stability theorem for entire J-complex curves in
tori. Global deformation and Bangert’s theorem. Mot(s) clés libre(s) : mathématiques, Grenoble, école d'été, institut fourier, summer school, feuilletages, COURBES PSEUDOHOLOMORPHES
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Andrei Teleman - Instantons and holomorphic curves on surfaces of class VII (Part 1)
/ Fanny Bastien
/ 02-07-2012
/ Canal-u.fr
Teleman Andrei
Voir le résumé
Voir le résumé
This
series of lectures is dedicated to recent results concerning the
existence of holomorphic curves on the surfaces of class VII. The first
lecture will be an introduction to the Donaldson theory. We will present
the fundamental notions and some important results in the theory,
explaining ideas of the proofs. In the second lecture we will present
the theory of holomorphic fiber bundles on complex surfaces, the
stability notion, moduli spaces and the Kobayashi-Hitschin
correspondence that links moduli spaces of stable fiber bundles (defined
in the fram of complex geometry) to moduli spaces of instantons
(defined in the frame of the Donaldson theory). In the last two lectures
we will prove the existence of holomorphic curves on minimal surfaces
of class VII with b2=1 or 2 and we will present the general strategy and
the last results obtained in the general case. Mot(s) clés libre(s) : mathématiques, Grenoble, école d'été, institut fourier, summer school, feuilletages, COURBES PSEUDOHOLOMORPHES
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Andrei Teleman - Instantons and holomorphic curves on surfaces of class VII (Part 2)
/ Fanny Bastien
/ 03-07-2012
/ Canal-u.fr
Teleman Andrei
Voir le résumé
Voir le résumé
This
series of lectures is dedicated to recent results concerning the
existence of holomorphic curves on the surfaces of class VII. The first
lecture will be an introduction to the Donaldson theory. We will present
the fundamental notions and some important results in the theory,
explaining ideas of the proofs. In the second lecture we will present
the theory of holomorphic fiber bundles on complex surfaces, the
stability notion, moduli spaces and the Kobayashi-Hitschin
correspondence that links moduli spaces of stable fiber bundles (defined
in the fram of complex geometry) to moduli spaces of instantons
(defined in the frame of the Donaldson theory). In the last two lectures
we will prove the existence of holomorphic curves on minimal surfaces
of class VII with b2=1 or 2 and we will present the general strategy and
the last results obtained in the general case. Mot(s) clés libre(s) : mathématiques, Grenoble, école d'été, institut fourier, summer school, feuilletages, COURBES PSEUDOHOLOMORPHES
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