Past events
2007
Tuesday, January 16, 2007, 3:00PM, Sala Seminari
Francesco Pegoraro
(Pisa)
Invarianti topologici e dinamica dei plasmi nello spazio e in laboratorio, I.
I plasmi come fluidi: dal teorema di Kelvin per i fludi non viscosi al teorema
di Alfven per i plasmi ideali in un campo magnetico.
Tuesday, January 23, 2007, 3:00PM, Sala Seminari
Francesco Pegoraro
(Pisa)
Invarianti topologici e dinamica dei plasmi nello spazio e in laboratorio, II.
Vincoli topologici nella dinamica turbolenta di un plasma.
2006
Tuesday, January 10, 2006, 3:00 pm, Sala dei seminari
Paolo Bellingeri
(Pisa)
"Propriet� residuali dei gruppi treccia e delle loro generalizzazioni."
Abstract.
Wednesday, Janauary 18, 2006, 3:30 pm, Sala dei seminari
Giuseppe Pareschi
(Universita' di Roma II)
Il lemma di Castelnuovo per le varieta' abeliane.
Abstract.
Wednesday, February 15, 2006, 3:30 pm, Sala dei seminari
Chiara Brambilla
(Universita' di Firenze)
Fibrati di Steiner e di Fibonacci.
Abstract.
Wednesday, February 22, 2006, 3:00 pm, Sala dei seminari
Rita Pardini
(Università di Pisa)
Il gruppo fondamentale algebrico delle superfici con K^2 piccolo.
Abstract
Thursday, February 23, 2006, 3:00 pm, Sala delle riunioni
Guillaume Théret
(Strasbourg)
On Thurston's metric on Teichmuller space.
Abstract.
Wednesday, March 15, 2006, 3:00 pm, Sala dei seminari
Flaminio� Flamini
(Universita' di Roma II)
Su alcune componenti dello schema di Hilbert di "scrolls" di grado d e genere g.
Abstract.
Thursday, March 16, 2006, 3:00 pm, Sala delle riunioni
Andras I. Stipsicz
(Budapest)
Rational blow-down and small exotic 4-manifolds.
Abstract.
Wednesday, March 29, 2006, 3:30 pm, Sala dei seminari
Priska Jahnke
(Bayreuth)
Terminal Fano threefolds and their smoothings.
Abstract.
Thursday, April 13, 2006, time and place TBA
Paolo Ghiggini
(UQAM)
L'omologia di Heegaard-Floer riconosce i nodi fibrati di genere 1.
Abstract.
Tuesday, July 11, 2006, 3:00PM, Sala dei Seminari
Gordana Matic'
(University of Georgia, Athens)
On right-veering diffeomorphisms and contact class in
Heegaard Floer homology
Abstract.
Thursday, November 9, 2006, 3:00PM, Sala dei Seminari
A. Suciu
(Northeastern, Boston)
Some combinatorial constructions in topology and group theory
Thursday, November 9, 2006, 4:30PM, Sala dei Seminari
S. Papadima
(Accademy of Science, Bucharest)
Cohomology jumping loci and fundamental groups of algebraic varieties
Monday, December 11, 2006, 4:15PM, Aula DMA piano terra
Andrei Vesnin
(Novosibirsk)
Constructions of hyperbolic 3-manifolds with hyperelliptic involutions
Abstract.
Monday, December 11, 2006, 5:30PM, Aula DMA piano terra
Francesco Costantino
(Strasburgo)
Una panoramica sulla congettura di volume
Abstract.
Wednesday, December 20, 2006, 3:00PM, Aula DMA piano terra
Athanase Papadopoulos
(Strasburgo)
The complex of domains of a surface.
2005
Wednesday, November 2, 2005, 3:00 pm, Sala dei seminari
Paolo Lisca
(Pisa)
"2-bridge knots and the ribbon conjecture."
Abstract.
Wednesday, November 23, 2005, 3:30 pm, Sala dei seminari
Elisabetta Colombo
(Universita' di Milano)
"Superfici cubiche marcate."
Abstract.
Wednesday, November 30, 2005, 3:30 pm, Sala dei seminari
Antonio Rapagnetta
(Universita' di Pisa)
Varieta' simplettiche irriducibili I.
Abstract.
Wednesday, December 7, 2005, 3:15 pm, Sala dei seminari
Antonio Rapagnetta
(Universita' di Pisa)
Varieta' simplettiche irriducibili II.
Abstract.
Wednesday, December 14, 2005, 3:00 pm, Sala dei seminari
Mauro Beltrametti
(Universita' di Genova)
Varieta' proiettive contenenti curve speciali.
Abstract.
Thursday, December 15, 2005, 2:00 pm, Sala delle riunioni
Stephane Baseilhac
(Grenoble)
"TBA."
Abstract.
Wednesday, December 21, 2005, 3:30 pm, Sala dei seminari
Antonio Rapagnetta
(Universita' di Pisa)
Varieta' simplettiche irriducibili III.
Abstract.
Thursday, December 22, 2005, 3:00 pm, Sala delle riunioni
Athanase Papadopulos
(Strasbourg)
Generalized metric spaces
Abstract.
Wednesday, May 11, 2005, 3:00 pm, Sala delle riunioni
Marco Manetti
(Universita' di Roma "La Sapienza")
Cilindri di Lie, schema di Hilbert e semiregolarita'.
Abstract.
Wednesday, May 18, 2005, 2:30 pm, Sala dei seminari
Lucian Badescu
(Genova)
"Sulla decomponibilita' del fibrato normale delle sottovarieta' lisce di P^n"
Abstract.
Wednesday, May 25, 2005, 3:00 pm, Sala delle riunioni
Sandra Di Rocco
(KTH Sockholm)
Varieta' toriche con difetto duale
Abstract.
Thursday, September 29, 2005, 3:00 pm, Sala dei seminari
Carlo Petronio
(Pisa)
On Hurwitz's existence problem for branched coverings between surfaces.
Wednesday, June 1, 2005, 3:00 pm, Aula Magna
Gianluca Occhetta
(Trento)
"Contrazioni estremali di varieta' lisce: nuovi fenomeni in dimensione
alta."
Abstract.
Starting from May 9, 2005, until May 25, 2005, on each Monday and Wednesday,
at 3pm in Aula 1, the following course will be taught:
Huai-Dong Cao
(Lehigh)
Ricci flow on 3-manifolds.
Wednesday, February 9, 2005, 3:00 pm, Sala dei Seminari
Cinzia Casagrande
(Pisa)
Il massimo numero di Picard di una varieta' di Fano torica.
Abstract.
Tuesday, February 15, 2005, 3:00 pm, Sala dei Seminari
Paolo Bellingeri
(Pisa)
Surface braids I: algebraical properties.
Abstract.
Tuesday, February 15, 2005, 4:15 pm, Sala dei Seminari
V. Kharlamov (Strasbourg)
Enumeration of real rational curves on rational surfaces and the
Welschinger invariant, I:
Introduction of the Welschinger invariant and its counting by tropical
geometry.
Abstract.
Thursday, February 17, 2005, 3:00 pm, Sala dei Seminari
V. Kharlamov (Strasbourg)
Enumeration of real rational curves on rational surfaces and the
Welschinger invariant, I:
Logarithmic asymptotics of Welschinger and Gromov-Witten invariants.
Abstract.
Tuesday, March 8, 2005, 3:00 pm, Sala dei Seminari
Paolo Bellingeri
(Pisa)
Surface braids II, finite type invariants.
Abstract.
Wednesday, March 9, 2005, 3:00 pm, Sala delle riunioni
Lucia Caporaso
(Roma III)
Modelli di Ne'ron sullo spazio dei moduli delle curve stabili.
Abstract.
Wednesday, March 16, 2005, 3:00 pm, Sala delle riunioni
Alberto Alzati
(Universita' di Milano)
Esistenza e non esistenza di varieta' speciali.
Abstract.
2004
Tuesday, January 13, 2004, 3:30pm, Sala dei seminari
András I. Stipsicz
(Renyi
Institute, Hungarian Academy of Sciences, Budapest)
Surgery on knots and Heegaard Floer theory.
Abstract.
Thursday, January 15, 2004, 3:00 pm, Sala dei seminari
Maria Rita Casali (Modena)
Computational approaches to PL-manifolds classification
via crystallization theory.
Abstract.
Thursday, January 15, 2004, 4:00 pm, Sala dei seminari
Sergei Matveev (Cheljabinsk)
A program for computer recognition of 3-manifolds: theory
and demonstration.
Abstract.
Wednesday, January 28, 2004, 5:00 pm, Sala delle riunioni
Rita Pardini
(Universita'
di Pisa)
Caratterizzazione birazionale dei prodotti di curve di
genere 2.
Abstract.
Tuesday, February 10, 2004, 4:00 pm, Sala delle
Riunioni
Gwenael Massuyeau
(Universita'
di Pisa)
Cohomology rings, Rochlin function, linking
pairing and the Goussarov-Habiro theory, Part I.
Wednesday, February 11, 2004, 3:30 pm, Sala delle
Riunioni
Elena Rubei
(Universita'
di Firenze)
Quivers e risoluzioni di fibrati omogenei su P2.
Abstract.
Monday, February 16, 2004, 3:00 pm, Sala delle
Riunioni
Gwenael Massuyeau
(Universita'
di Pisa)
Cohomology rings, Rochlin function, linking
pairing and the Goussarov-Habiro theory, Part II.
Monday, February 23, 2004, 3:00 pm, Sala dei
Seminari
Athanase Papadopoulos
(Strasbourg)
Nonsymmetric metrics onTeichmuller spaces.
Wednesday, March 3, 2004, 2:00 pm, Sala dei
seminari
Roberto Frigerio
(Università
di Pisa)
Triangulations of 3-manifolds, hyperbolic relative handlebodies,
and Dehn filling, I.
Abstract
.
Wednesday, March 3, 2004, 3:30 pm, Sala delle riunioni
Paola Frediani
(Universita'
di Pavia)
Classificazione delle superficie di Kodaira reali.
Abstract.
Wednesday, March 3, 2004, 5:00 pm, Sala delle riunioni
Roberto Pignatelli
(Universita' di Trento)
Curve di genere 3 e un problema di Horikawa.
Abstract.
Monday, March 8, 2004, 3:00 pm, Sala dei
seminari
Roberto Frigerio
(Università
di Pisa)
Triangulations of 3-manifolds, hyperbolic relative handlebodies,
and Dehn filling, II.
Abstract
.
Wednesday, March 10, 2004, 2:00 pm, Sala dei
seminari
Bruno Martelli
(Università
di Pisa)
Geometria tropicale e decomposizione in pantaloni delle ipersuperfici
algebriche.
Abstract
.
Wednesday, March 10, 2004, 3:30 pm, Sala delle riunioni
Simona Settepanella
(Universita' di Pisa)
Coomologia dei gruppi delle trecce pure generalizzati e
fibra di
Milnor di
arrangiamenti di riflessioni.
Abstract.
Tuesday, March 16, 2004, 3:00pm, Sala delle riunioni
András I. Stipsicz
(Renyi Institute, Hungarian Academy of Sciences, Budapest)
Ozsvath-Szabo invariants and contact structures.
Abstract.
Tuesday, March 16, 2004, 4:00 pm, Sala delle
riunioni
Gaspare Carbone
(Università
di Pisa)
Triangolazioni decorate ed invarianti.
Abstract
.
Wednesday, March 24, 2004, 3:30 pm, Sala delle riunioni
Rita Pardini
(Universita' di Pisa)
La disuguaglianza di Severi K^2>=\4\chi per le superfici di dimensione di
Albanese massima
Wednesday, March 31, 2004, 3:30 pm, Sala delle riunioni
Emilia Mezzetti
(Universita' di Trieste)
Congruenze di rette e applicazioni.
Abstract.
Tuesday, April 20, 2004, 3:00pm, Sala dei Seminari
Andrei Pajitnov
(Universite' de Lille):
Circle-valued Morse theory, Novikov homology, and twisted Alexander
polynomial.
Abstract.
Wednesday, April 21, 2004, 2:00 pm, Sala dei seminari
John Hubbard
(Cornell University)
On Thurston's hyperbolization theorem for 3-manifolds fibering over the circle.
Wednesday, April 21, 2004, 3:30 pm, Sala delle riunioni
Angelo Vistoli
(Universita' di Bologna)
Curve torte e strutture logaritmiche.
Abstract.
Wednesday, April 21, 2004, 5:00 pm, Sala delle riunioni
Daniel Naie
(Universite' d'Angers)
On varieties containing quasi-lines.
Abstract.
Tuesday, April 27, 2004, 3:00pm, Sala dei Seminari
Stefano Francaviglia
(Universita' di Pisa):
Groups of isometries, harmonic measures and equivariant maps.
Abstract.
Wednesday, May 19, 2004, 3:15 pm (sharp), Sala delle riunioni
Barbara Fantechi
(S.I.S.S.A., Trieste)
Coomologia quantistica dell'orbifold Sym^2(S).
Abstract.
Friday, May 21, 2004, 2:30 pm, Sala delle riunioni
Bruno Zimmermann
(Trieste)
Finite group actions on homology 3-spheres and knots with the same
2-fold branched covering.
Tuesday, May 25, 2004, 11:00 am, Sala dei seminari
Wolfgang Metzler
(Frankfurt)
2-dimensional topology and decision problems.
Tuesday, May 25, 2004, 12:00 am, Sala dei seminari
Cynthia Hog-Angeloni
(Frankfurt)
Embeddability of two-complexes and anannular handle structures.
Wednesday, May 26, 2004, 2:30 pm, Sala dei seminari
Leslie Wilson
(University of Hawaii)
Limits of tangent spaces to real surfaces
Abstract.
Thursday, May 27, 2004, 3:30 pm, Sala delle riunioni
Luca Migliorini
(Universita' di Bologna)
Alla frontiera del cono ampio
Abstract.
Thursday, June 10, 2004, 4:00 pm, Sala dei Seminari
Leslie Wilson
(University of Hawaii)
Equisingularity of sections, t^r condition, and the integral closure of modules.
Abstract.
Thursday, June 24, 2004, 4:00 pm, Sala dei Seminari
E. L. Pervova
(Chelyabinsk)
Complexity of Abelian groups.
Abstract.
During the first three weeks of May the following course
will be given within the "Galileo Galilei" doctoral school:
Bernard Perron (Dijon)
Fox differential Calculus revisited. Applications to
mapping class
group of surfaces and low dimension topology. Abstract.
Mini-workshop on
Floer Homology and
Low-dimensional Manifolds
June 29 - 30 and July 1 - 2, 2004
Aula Magna
Department of Mathematics
University of Pisa
Details
During the period June 15 - July 15 2004,
Prof. T. Mrowka (M.I.T.)
will visit our group and give the following course:
Floer homology for Seiberg-Witten monopoles. Abstract<$
Tuesday, September 21, 2004, 3:00 pm, Sala dei Seminari
Boris Apanasov
(Oklahoma)
Laminations in hyperbolic manifolds and quasifuchsian deformations.
Abstract.
Tuesday, September 28, 2004, 3:00 pm, Sala dei Seminari
J. M. Montesinos Amibilia
(Madrid)
Representing closed 3-manifolds by triangulations of S^3.
Abstract.
Tuesday, September 28, 2004, 4:30 pm, Sala dei Seminari
Dmitriy Derevnin
(Novosibirsk)
Volumes of polyhedra in hyperbolic 3-space.
Abstract.
Tuesday, October 5, 2004, 3:00 pm, Sala dei Seminari
Carlo Petronio
(Pisa)
Spherical splitting of 3-orbifolds.
Abstract.
Tuesday, October 5, 2004, 4:30 pm, Sala dei Seminari
Ruslan Isangulov
(Novosibirsk)
Isospectral flat 3-manifolds.
Abstract.
Wednesday, October 6, 2004, 3:30 pm, Sala dei Seminari
Ruslan Isangulov
(Novosibirsk)
Polynomial invariants of rational links.
Abstract.
Tuesday, October 12, 2004, 3:00 pm, Sala dei Seminari
Thierry Barbot
(Lyon)
Globally hyperbolic space-times with constant curvature.
Abstract.
Tuesday, October 12, 2004, 3:30 pm, Sala dei Seminari
Irene Scorza
(Genova)
Convergence of once-punctured torus groups.
Abstract.
Tuesday, October 19, 2004, 3:00 pm, Sala dei Seminari
David Martinez
(Pisa)
Morse functions for projective CR manifolds.
Abstract.
Tuesday, January 13, 2004, 3:30pm, Sala dei seminari
András I. Stipsicz
Renyi Institute, Hungarian Academy of Sciences, Budapest
Surgery on knots and Heegaard Floer theory
Abstract.
2003
Wednesday, October 1, 2003, 3:00 pm, Sala dei Seminari
Cinzia Casagrande
(Universita'
di Roma 3):
Limiti di radici di fibrati lineari su curve
Abstract.
Monday, October 13, 2003, 15:00pm, Aula Seminari
Benoit Bertrand
(Universita'
di Pisa)
First Steps in Tropical Geometry
Abstract.
Wednesday, October 15, 2003, 3:00 pm, Sala dei Seminari
Michele Grassi
(Universita'
di Pisa)
Varieta' autoduali e simmetria speculare per la quintica
di dimensione 3
Abstract.
Wednesday, October 22, 2003, 3:00 pm, Sala delle riunioni
Luca Chiantini
(Universita'
di Siena)
Sulla linearizzazione locale e globale di varietà
proiettive.
Abstract.
Tuesday, October 28, 2003, 2:30 pm, Sala dei seminari
Stefano Francaviglia (Universita'
di Pisa)
Volume iperbolico di rappresentazioni e rigidita', I.
Abstract.
Tuesday, November 4, 2003, 2:30 pm, Sala dei seminari
Stefano Francaviglia (Universita'
di Pisa)
Volume iperbolico di rappresentazioni e rigidita', II.
Abstract.
Tuesday, November 11, 2003, 3:00 pm, Sala dei seminari
Juan Souto (Bonn)
Heegaard genus and distance in the curve complex.
Abstract.
Wednesday, November 12, 2003, 5:00 pm, Sala delle riunioni
Marco Andreatta
(Universita'
di Trento)
Alcuni risultati recenti sulle varieta' di Fano.
Abstract.
Thursday, November 13, 2003, 5:00 pm, Sala dei seminari
Benjamin Klaff (Montreal)
Boundary slopes of knots in closed 3-manifolds with
odd cyclic fundamental group.
Abstract.
Tuesday, November 18, 2003, 3:00 pm, Sala dei seminari
François Costantino
Ombre e complessità di varietà di dimensione
3.
Abstract.
Thursday, November 27, 2003, 5:00 pm, Sala dei seminari
François Costantino
Ombre branched di varietà di dimensione 4.
Abstract.
Tuesday, December 2, 2003, 3:00 pm, Sala dei seminari
Francesco Bonsante (SNS)
Spazi-tempo piatti con una superficie di Cauchy compatta
e iperbolica, I.
Abstract.
Tuesday, December 9, 2003, 3:00 pm, Sala dei seminari
Francesco Bonsante (SNS)
Spazi-tempo piatti con una superficie di Cauchy compatta
e iperbolica, II.
Abstract.
Tuesday, December 16, 2003, 3:00 pm, Sala dei seminari
Rinat Kashaev (Genève)
Symmetrically factorized Lie groups and representations
of the
groupoid of ideal triangulations of a punctured surface.
Abstract.
Wednesday, December 17, 2003, 4:30 pm, Sala delle riunioni
Massimiliano Mella
(Universita'
di Ferrara)
Geometria birazionale esplicita.
Abstract.
Thursday, December 18, 2003, 2:30 pm, Sala dei seminari
Rinat Kashaev (Genève)
Coordinates for the moduli space of flat PSL(2,R)-connections.
Abstract.
2002
Thursday, January 10, 2002, 3:00pm, Sala dei Seminari
Silvia Benvenuti (Pisa):
Sulle presentazioni del gruppo modulare, I.
Thursday, January 17, 2002, 3:00pm, Sala dei Seminari
Silvia Benvenuti (Pisa):
Sulle presentazioni del gruppo modulare, II.
Thursday, January 24, 2002, 3:00pm, Sala dei Seminari
Francesco Bonsante
(Scuola Normale):
Spazio-tempo piatti non rigidi, I.
Thursday, January 31, 2002, 3:00pm, Sala dei Seminari
Francesco Bonsante
(Scuola Normale):
Spazio-tempo piatti non rigidi, II.
Tuesday, February 5, 2002, 3:00pm, Sala dei Seminari
Prof. V. Kharlamov
(Strasbourg):
Topology and deformations of real algebraic surfaces,
I.
Thursday, February 7, 2002, 3:00pm, Sala dei Seminari
Prof. V. Kharlamov
(Strasbourg):
Topology and deformations of real algebraic surfaces,
II.
Thursday, February 14, 2002, 3:00pm, Sala dei Seminari
Gennaro Amendola (Pisa):
Un calcolo per scheletri standard di 3-varieta' con bordo
torico marcato. Abstract.
Thursday, February 21, 2002, 3:00pm, Sala dei Seminari
Prof. Charles Favre (CNRS-Paris):
Birational symmetries of foliations. Abstract.
Tuesday, February 26, 2002, 5:30pm, Sala dei Seminari
Prof. Wolfgang Metzler (Frankfurt):
On the present status of the generalized
Andrews-Curtis conjecture. Abstract.
Thursday, February 28, 2002, 3:00pm, Sala dei Seminari
Dr. Cynthia Hog-Angeloni
(Frankfurt):
A uniqueness theorem for regular neighborhoods of 2-complexes
in 3-manifolds. Abstract.
Thursday, March 7, 2002, 3:00pm, Sala dei Seminari
Bruno Martelli (Pisa):
Complessita' e catalogazione di 3-varieta', I.
Thursday, March 14, 2002, 3:00pm, Sala dei Seminari
Bruno Martelli (Pisa):
Complessita' e catalogazione di 3-varieta', II.
Thursday, March 21, 2002, 3:00pm, Sala dei Seminari
Michele Grassi (Pisa):
Simmetria speculare e varieta' autoduali, I.
Tuesday, March 26, 2002, 3:00pm, Sala dei Seminari
Michele Grassi (Pisa):
Simmetria speculare e varieta' autoduali, II.
Tuesday, April 9, 2002, 3:00pm, Sala dei Seminari
Giovanni Forni (Princeton):
Sugli esponenti di Liapunov del flusso di Teichmuller
Abstract.
Thursday, April 11, 2002, 3:00pm, Sala dei Seminari
Roberto Frigerio (Pisa):
Costruzione e riconoscimento di 3-varieta' iperboliche
con bordo geodetico, I.
Abstract.
Thursday, April 18, 2002, 3:00pm, Sala dei Seminari
Roberto Frigerio (Pisa):
Costruzione e riconoscimento di 3-varieta' iperboliche
con bordo geodetico, II.
Abstract.
Tuesday, April 23, 2002, 3:00pm, Sala dei Seminari
Sandro Manfredini (Pisa):
Singolarita' normali di superfici e teoria dei grafi.
Abstract.
Thursday, May 2, 2002, 10:00am, Sala dei Seminari
Sergei Matveev (Cheljabinsk
and Bonn):
Algorithmic recognition of 3-manifolds, I.
Thursday, May 2, 2002, 3:00pm, Sala dei Seminari
Francesco Costantino (Pisa):
Ombre di varieta' di dimensione 4, I.
Abstract.
Friday, May 3, 2002, 11:00am, Sala dei Seminari
Sergei Matveev (Cheljabinsk
and Bonn):
Algorithmic recognition of 3-manifolds, II.
Tuesday, May 7, 2002, 3:00pm, Sala dei Seminari
Sergei Matveev (Cheljabinsk
and Bonn):
Algorithmic recognition of 3-manifolds, III.
Thursday, May 9, 2002, 10:00am, Sala dei Seminari
Sergei Matveev (Cheljabinsk
and Bonn):
Algorithmic recognition of 3-manifolds, IV.
Thursday, May 9, 2002, 3:00pm, Sala dei Seminari
Francesco Costantino (Pisa):
Ombre di varieta' di dimensione 4, II.
Abstract.
Friday, May 10, 2002, 11:00am, Sala dei Seminari
Sergei Matveev (Cheljabinsk
and Bonn):
Algorithmic recognition of 3-manifolds, V.
Tuesday, May 14, 2002, 3:00pm, Sala dei Seminari
Sergei Matveev (Cheljabinsk
and Bonn):
Algorithmic recognition of 3-manifolds, VI.
Thursday, May 16, 2002, 3:00pm, Sala dei Seminari
Stephane Baseilhac (Pisa):
Scissors congruence classes and quantum invariants of
3-manifolds, I.
Abstract.
Tuesday, May 21, 2002, 3:00pm, Sala dei Seminari
Sergei Matveev (Cheljabinsk
and Bonn):
Algorithmic recognition of 3-manifolds, VII.
Thursday, May 23, 2002, 10:00am, Sala dei Seminari
Sergei Matveev (Cheljabinsk
and Bonn):
Algorithmic recognition of 3-manifolds, VIII.
Wednesday, May 22, 2002, 2:30pm, Sala dei Seminari
Stephane Baseilhac (Pisa):
Scissors congruence classes and quantum invariants of
3-manifolds, II.
Abstract.
Friday, May 24, 2002, 11:00am, Sala dei Seminari
Sergei Matveev (Cheljabinsk
and Bonn):
Algorithmic recognition of 3-manifolds, IX.
Thursday, May 30, 2002, 3:00pm, Sala dei Seminari
Francesca Tovena (Roma II):
Teoremi dell'indice per applicazioni olomorfe.
Abstract.
Thursday, May 30, 2002, 4:00pm, Sala dei Seminari
Elsa Mayrand (Marseille):
Dehn surgeries on a 2-component link in S^3 .
Abstract.
2001
Thursday, October 11, 2001, 3:00pm, Sala dei Seminari
Prof. Dusan Repovs (Ljubljana):
New results on 2-polyhedra in 3- and 4-manifolds. Abstract.
(Many more seminars were held in
2001, but were not recorded on this site.)
2000
January 20, 3pm, Sala dei Seminari
Isabelle Bonnard (Angers) Algebraically Constructible
Functions
January 25, 10am, Sala dei Seminari
Enrico Schlesinger (Milano - Politecnico) Curve
in un piano doppio
January 25, 11:30am, Sala dei Seminari
Stefan Muller-Stach (Essen) Polylogarithmic
identities among algebraic cycles
January 27, 3pm, Sala dei Seminari
Jeffrey Weeks Cosmic Topology
Abstract: "During the next few years, fresh measurements of
the cosmic microwave background radiation may reveal
the global topology of the universe. This talk will
begin with an overview of big bang cosmology, go on
to explain how the relict radiation may reveal the
universe's topology, and show how geometric rigidity
may verify the correctness of the astronomical
observations and improve their precision."
February 8, 3pm, Sala dei Seminari
Marco Abate - Roma II
Dinamica di funzioni olomorfe tangenti all'identita' e teorema dell'indice
residuale
February 15, 3pm, Sala dei Seminari
Athanase Papadopoulos - Strasbourg
Symbolic Dynamics for Geodesic Flows, I
February 17, 3pm, Sala dei Seminari
Athanase Papadopoulos - Strasbourg
Symbolic Dynamics for Geodesic Flows, II
February 22, 3pm, Sala dei Seminari
Riccardo Piergallini - Camerino
Compact Stein surfaces with boundary as branched covers of B4,
I
We prove that Stein surfaces with boundary coincide up to orientation preserving
diffeomorphisms with simple branched coverings of $\B^4$ whose branch set
is a
positive braided surface. As a consequence, we have that a smooth oriented
$3$-
manifold is Stein fillable iff it has a positive open-book decomposition.
February 23, 3pm, Sala dei Seminari
Luis Paris - Dijon Geometric subgroups of mapping
class groups
February 24, 3pm, Sala dei Seminari
Riccardo Piergallini - Camerino
Compact Stein surfaces with boundary as branched covers of B4,
II
February 29, 4pm, Sala dei Seminari
Dieter Kotschick - Munich Surface bundles over
surfaces, I
We shall discuss 4-manifolds with are surface bundles over surfaces, giving
new examples, discussing complex and differential-geometric structures
on them,
and proving topological results using Seiberg-Witten gauge theory.
March 2, 3pm, Sala dei Seminari
Dieter Kotschick - Munich Surface bundles over
surfaces, II
March 3, 3pm, Sala dei Seminari
Giorgio Ottaviani - Firenze Fibrati
di Steiner e matrici multidimensionali
Abstract: Simpson ha posto il problema di studiare l'azione di SL(V) sugli
spazi di
moduli di fibrati su P(V). In un lavoro congiunto con Ancona (math.AG/9910046)
analizziamo il primo caso non banale, quello dei fibrati di Steiner. I
risultati si possono
interpretare in termini di matrici multidimensionali, dove gioca un ruolo
fondamentale il
concetto di iperdeterminante, studiato recentemente da Gelfand, Kapranov
e Zelevinski.
Il risultato principale afferma che il gruppo di simmetrie dei fibrati
e' sempre contenuto
in SL(2) e l'azione puo' essere determinata. La dimostrazione e' geometrica
ed utilizza lo
schema degli iperpiani di salto
March 14, 3pm, Sala dei Seminari
Andras Stipsicz - Budapest Lefschetz fibrations:
properties and applications, I
Abstract: The understanding of the topology of Lefschetz fibrations
(complex Morse functions) seems to be extremely important
in the study of topological properties of symplectic 4-manifolds.
According to celebrated results of Freedman and Donaldson, the
topology of a smooth 4-manifold is essentially determined by
its fundamental group, Euler characteristic, signature and
spin property. In the lecture (after discussing the necessary
definitions and the relation between symplectic manifolds and
Lefschetz fibrations) we will present bounds for these
characteristic numbers of Lefschetz fibrations.
Using Lefschetz fibrations, 4-manifolds with special properties
can be constructed. We will describe a way to give 4-manifolds
admitting surface bundle structures (over surfaces with low
genus) with nonzero signature; and simply connected symplectic
4-manifolds which are close to the Bogomolov-Miyaoka-Yau line in
the usual geography picture of 4-manifolds.
March 16, 4pm, Sala dei Seminari
Andras Stipsicz - Budapest Lefschetz fibrations:
properties and applications, II
May 3, 4pm, Sala delle Riunioni
Bruno Zimmermann - Trieste Hyperbolic 3-manifolds
as cyclic branched coverings of links, I
May 4, 3pm, Sala delle Riunioni
Marco Reni - Trieste Hyperbolic 3-manifolds
as cyclic branched coverings of links, II
May 9, 3pm, Sala delle Riunioni
F. Laudenbach - Ecole Polytechnique Topics
in symplectic topology I
May 10, 3pm, Sala delle Riunioni
F. Laudenbach - Ecole Polytechnique Topics
in symplectic topology II
May 10, 5pm, Sala delle Riunioni
D. Auroux - Ecole Polytechnique Approximately
holomorphic geometry and symplectic submanifolds
May 11, 3pm, Sala delle Riunioni
D. Auroux - Ecole Polytechnique Symplectic
Lefschetz pencils
May 16, 3pm, Sala delle Riunioni
F. Laudenbach - Ecole Polytechnique Topics
in symplectic topology III
May 17, 3pm, Sala delle Riunioni
F. Laudenbach - Ecole Polytechnique Topics
in symplectic topology IV
May 17, 5pm, Sala delle Riunioni
D. Auroux - Ecole Polytechnique Symplectic
4-manifolds and branched coverings of CP^2
May 18, 3pm, Sala delle Riunioni
D. Auroux - Ecole Polytechnique Invariants
of symplectic 4-manifolds and degree doubling formulas
May 24, 3pm, Sala delle Riunioni
J.C. Sikorav - ENS (Lyon) J-holomorphic
curves and the symplectic isotopy problem in dimension 4, I
May 25, 3pm, Sala delle Riunioni
J.C. Sikorav - ENS (Lyon) J-holomorphic
curves and the symplectic isotopy problem in dimension 4, II
May 25, 5pm, Sala delle Riunioni
L. Funar - Grenoble On
the geometric simple connectivity of open manifolds
May 30, 3pm, Sala dei Seminari
J.C. Sikorav - ENS (Lyon) J-holomorphic
curves and the symplectic isotopy problem in dimension 4, III
June 1, 3pm, Sala delle Riunioni
J.C. Sikorav - ENS (Lyon) J-holomorphic
curves and the symplectic isotopy problem in dimension 4, IV
June 13, 3pm, Sala dei Seminari
L. Kauffman - Chicago Invariants
of Knots and 3-Manifolds, I
June 13, 5pm, Sala dei Seminari
M. Hutchings - Stanford Morse
theory and Reidemeister torsion I
June 14, 3pm, Sala dei Seminari
L. Kauffman - Chicago Invariants
of Knots and 3-Manifolds, II
June 14, 5pm, Sala dei Seminari
M. Hutchings - Stanford Morse
theory and Reidemeister torsion II
June 15, 3pm, Sala dei Seminari
L. Kauffman - Chicago Invariants
of Knots and 3-Manifolds, III
June 20, 3pm, Sala dei Seminari
L. Kauffman - Chicago, Invariants
of Knots and 3-Manifolds, IV
June 21, 3pm, Sala dei Seminari
M. Hutchings - Stanford Seiberg-Witten
invariants of 3-manifolds
June 22, 3pm, Sala dei Seminari
M. Hutchings - Stanford Seiberg-Witten
Floer homology and surface dynamics
1999
November 30, 3pm, Sala dei Seminari
V. Tchernov (Max Planck Institute)
Finite order invariants of Legendrian, of transverse, and of framed
knots in contact three manifolds, part IDecember 2, 3pm, Sala dei Seminari
V. Tchernov (Max Planck Institute)
Finite order invariants of Legendrian, of transverse, and of framed
knots in contact three manifolds, part IIDecember 14, 3pm, Sala dei Seminari
S. Vidussi (Ecole Polytechnique)
Norms on the cohomology of a 3-manifold and Seiberg-Witten theoryDecember 16, 3pm, Sala dei Seminari
S. Vidussi (Ecole Polytechnique)
Symplectic 4-manifolds and 3-dimensional topology