## Past seminars 2008 (go back to current seminars)

When Where Who Title (Click for abstract)
Thu 18 Dec 2008 16:30 MB, room C Matteo Tommasini (SISSA, Laurea Magistrale) Algebraic stacks
Abstract. A basic introduction
Thu 18 Dec 2008 15:30 MB, room C Giovanni Faonte (SISSA, Laurea Magistrale) Grothendieck topologies
Abstract. A basic introduction
Fri 12 Dec 2008 14:00 MB, room C Antonio Lerario (SISSA) Analysis of the singularities for the Ricci flow
Abstract. The talk will be mainly an exposition of the volume comparison theorem and of the splitting theorem
Thu 11 Dec 2008 14:30 MB, room D Pietro Giavedoni (SISSA) Random Normal Matrices and Polynomial Curves
Abstract. This is the second seminar of this series
Wed 10 Dec 2008 14:30 MB, room D Stefano Maggiolo (SISSA) Moduli of Godeaux surfaces of torsion at least 3
Abstract. no abstract available
Wed 10 Dec 2008 11:00 MB, room D Dr. Gherardo Piacitelli (SISSA) Twisted Covariance and DFR Spacetime Quantisation
Abstract. We will discuss a class of models of quantum spacetime. In particular we will show that the approach to covariance in terms of coproducts twisted a la Drinfeld is equivalent to the DFR product with an additional non invariant constraint. Indeed, the tensor character of the commutator of the quantum coordinates cannot be suppressed even in the formalism of twisted covariance.
Tue 9 Dec 2008 16:00 MB, room C Nicola Pagani (SISSA) The orbifold cohomology of the moduli stack of pointed genus one stable curves
Abstract. no abstract available
Thu 4 Dec 2008 16:00 MB, room C Dr. Simon Brain (SISSA) Noncommutative Families of Monads and Instantons
Abstract. no abstract available
Thu 4 Dec 2008 14:30 MB, room D Pietro Giavedoni (SISSA) Random Normal Matrices and Polynomial Curves
Abstract. no abstract available
Wed 3 Dec 2008 14:30 MB, room D Prof. Sandro Verra () Unirationality of the moduli space R_g in low genus
Abstract. no abstract available
Wed 3 Dec 2008 11:00 MB, room D Prof. Sergio Albeverio (Bonn) Infinite dimensional integrals, asymptotics and application
Abstract. no abstract available
Mon 1 Dec 2008 14:00 MB, room C Andrea Mondino (SISSA) Analysis of the Singularities for the Ricci Flow
Abstract. no abstract available
Fri 28 Nov 2008 14:30 MB, room C Giacomo Dossena (SISSA) Gelfand-Naimark theorems for real C*-algebras
Abstract. no abstract available
Thu 27 Nov 2008 11:00 MB, room A Sergio Holguin (SISSA) Leray's theorem
Abstract. no abstract available
Wed 26 Nov 2008 14:00 MB, room C Dr. Francesco D'Andrea (UCL Louvain-la-Neuve, Belgium) Noncommutative Geometry of Symplectic Symmetric Spaces
Abstract. no abstract available
Thu 20 Nov 2008 15:30 MB, room C Dr. Margarida Melo () Compactified Picard stacks over Mg,n
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Thu 13 Nov 2008 15:00 MB, room D Prof. Tomasz Maszczyk (University of Warsaw) Distributive lattices and cohomology
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Thu 13 Nov 2008 14:00 MB, room D Prof. Ryszard Nest (University of Copenhagen) Spectral flow and KMS states
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Wed 12 Nov 2008 11:00 MB, room C Prof. Tomasz Maszczyk (University of Warsaw) On splitting polynomials with noncommutative coefficients
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Thu 6 Nov 2008 16:00 MB, room C Prof. Jean-Yves Welschinger Open Strings, Lagrangian conductors and Floer functor
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Wed 29 Oct 2008 14:30 MB, room D Prof. Maxim Pavlov (Lebedev Physical Institute, Moscow) Integrability of oriented associativity equations
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Thu 23 Oct 2008 17:00 MB, room C Giacomo Dossena (SISSA) The abstract De Rham theorem
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Thu 23 Oct 2008 15:00 MB, room C Prof. Daniel Hernandez Ruiperez (Universidad de Salamanca) Moduli spaces of sheaves on degenerations of elliptic curves
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Tue 21 Oct 2008 14:30 MB, room D Prof. Alessio Corti (Imperial College, London) Gromov-Witten theory of toric stacks
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Mon 20 Oct 2008 14:30 MB, room D Prof. A.P. Balachandran (Syracuse University) Causality on the Moyal Plane
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Fri 17 Oct 2008 11:00 MB, room C Dr. Fabio Nironi (SISSA) Moduli Spaces of Semistable Sheaves on Projective Stacks (3/3)
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Tue 14 Oct 2008 14:30 MB, room C Cristina Manolache (SISSA) Functoriality properties of virtual cycles
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Tue 14 Oct 2008 11:00 MB, room E Sergio Andres Holguin Cardona (SISSA) Topological twist and Donaldson invariants
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Mon 13 Oct 2008 16:00 MB, room C Prof. Angelo Vistoli (Scuola Normale Superiore di Pisa) Parabolic sheaves on logarithmic schemes
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Fri 10 Oct 2008 14:00 MB, room D Giacomo Dossena (SISSA) Poisson-Lie groups and dressing transformations
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Fri 10 Oct 2008 14:00 MB, room C Fabio Nironi (SISSA) Semistable Sheaves on Projective Deligne-Mumford stacks (2/3)
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Thu 9 Oct 2008 14:30 MB, room C Prof. Arnfinn Laudal (University of Oslo) Non-commutative algebraic geometry, and a model for spin, isospin, hypercharge, and quarks
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Fri 3 Oct 2008 14:00 MB, room C Fabio Nironi (SISSA) Coherent sheaves on projective Deligne-Mumford stacks (1/3)
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Wed 1 Oct 2008 14:00 MB, room C Dr. Orsola Tommasi (Hannover) Cohomology of the moduli space of pointed hyperelliptic curves
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Wed 24 Sep 2008 11:00 MB, room C Dr. Walter van Suijlekom (Radboud Universiteit, Nijmegen) Representing Feynman graphs on Gerstenhaber algebras
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Tue 23 Sep 2008 15:00 MB, room D Giacomo Dossena (SISSA) Unitalization of C*-algebras
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Tue 23 Sep 2008 14:00 MB, room D Giuseppe De Nittis (SISSA) Faithful states and representations of C*-algebras
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Tue 23 Sep 2008 11:00 MB, room D Sergio Andres Holguin Cardona (SISSA) An introduction to Tannaka-Krein duality
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Mon 22 Sep 2008 11:00 MB, room D Giacomo Dossena (SISSA) Gelfand-Naimark theorems: their proofs and a few elementary applications
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Wed 10 Sep 2008 14:30 MB, room C Dr. Jonathan P. Pridham (University of Cambridge) From local deformations to global deformations
Abstract. I will show how simplicial methods can be used to construct DGLAs governing deformations of sheaves of objects. A key example is a sheaf of algebras (hence deformations of a scheme).
Thu 24 Jul 2008 14:30 MB, room D Dr. Hua-Liang Chang (SISSA) Derived Kodaira Spencer map and semiregularity
Abstract. The derived Kodaira Spencer map and higher tangent vectors appeared in K.Behrend & B.Fantechi's "The intrinsic normal cone". I will apply it with some property of obstruction theory to show the semiregularity, i.e., Kodaira's principle: ambient cohomology annihilates obstructions. The semiregularity was proven by H. Clemens('80s) in a complicated way and reproved by M. Manetti in 1997. The proof exhibit here would be short and different from the classical methods.
Wed 16 Jul 2008 16:00 MB, room C Sergio Andres Holguin Cardona (SISSA) An introduction to groupoids and algebroids
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Wed 16 Jul 2008 12:00 MB, room D Dr. Vincenzo Sciacca () Singularity formation for Prandtl's equations
Abstract. Prandtl's equations for the impulsively started disk are considered and solved using a spectral method in the streamwise direction and finite--differences in the normal direction. The process of the formation of the singularity is followed in the complex plane using the singularity tracking method. The Van Dommelen and Shen's singularity is classified as a cubic root singularity. We introduce a class of initial data, defined as the superposition of the Van Dommelen and Shen solution well before the appearance of their singularity plus an analytic perturbation containing a particular complex singularity (that we call dipole singularity). These data lead to an earlier singularity formation and are uniformly bounded in norm $H^1$. The blow up time, which seems to be possible to be taken short at will, behaves as the blow up time of the Burger's equation with data in the same class. If in the Prandtl's equations one restores the small viscosity in the streamwise direction one can see that the behavior of the singularities is quite different. They stabilize at a distance from the real axis which depends on the amount of the viscosity, and the solutions remain regular. The physical meaning of the analytic perturbation previously introduced is shown to be the placement of two counter rotating vortices inside the boundary layer.
Tue 8 Jul 2008 14:30 MB, room D Prof. Ettore Aldrovandi (Florida) Group-like stacks and the non-abelian derived category
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Mon 7 Jul 2008 14:30 MB, room D Prof. Dimitri Markushevich (Lille) Abel--Jacobi map for hypersurfaces and noncommutative Calabi-Yau's
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Thu 3 Jul 2008 14:30 MB, room C Prof. Matteo Marsili (ICTP) Statistical Physics, Information and Correlations in Financial Markets
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Thu 3 Jul 2008 12:00 MB, room C Prof. Marco Bertola (Montreal) Universality of the spectral statistics in Random Matrix theory: old and new results
Abstract. In this introductory expose' I will explain what are questions of universality in the spectral statistics of random matrices (typically the one-matrix model) and their relation to the asymptotic (scaled) analysis of certain orthogonal polynomials.
Wed 2 Jul 2008 14:30 MB, room C Prof. M. Manas (Madrid) Multicomponent Toda
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Mon 30 Jun 2008 14:30 MB, room C Prof. A. Morozov (ITEP Moscow) Old and new symmetries
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Wed 25 Jun 2008 11:00 MB, room D Dr. P. Hajac (IMPAN, Warsaw) The Peter-Weyl-Galois theory of compact principal bundles
Abstract. The main result is that the freeness of actions of compact quantum groups on unital C*-algebras, or more generally, the principality of comodule algebras, is preserved under one-surjective pullbacks (fibre products). We algebraize the C*-setting by defining for any compact quantum group action on a unital C*-algebra its Peter-Weyl comodule algebra. Thus we extend the notion of the algebra of regular functions (spanned by the matrix coefficients of the irreducible unitary corepresentations) from compact quantum groups to unital C*-algebras on which they act. This talk will be focused on deducing the equivalence of the freeness of a classical compact group action on a compact Hausdorff space and the Galois condition for its Peter-Weyl comodule algebra. In this way, the well-known analogy between coverings and Galois extensions is made precise and generalized from finite to all compact groups. Time permitting, there will be entertainment part explainig how all the above is linked with the the celebrated Dedekind problem of determining the number of elements in a free distributive lattice generated by N elements. The problem remains open since 1897. (Based on joint work with P.F.Baum, U.Kraehmer, R.Matthes, E.Wagner and B.Zielinski.)
Wed 18 Jun 2008 14:30 MB, room D Prof. Peter Michor (Vienna) Riemannian Geometries on shape spaces
Abstract. A version of shape space is the space of all smooth regular closed plane curves, i.e., the space of orbits of the action of the diffeomorphism group $Diff(S^1)$ on the space Imm(S^1,R^2)$of smooth mappings$c:S^1\to R^2with $c'$ never 0. The aim is to find geodesic distance functions on shape space which make sense for applications in imaging sciences. The simples solution does not work because the $L^2$ or $H^0$ metric on the space of smooth plane regular closed curves induces vanishing geodesic distance on the quotient $Imm(S^1,R^2)/Diff(S^1)$. This is a general phenomenon and holds on all full diffeomorphism groups and spaces $Imm(M,N)/Diff(M)$ for a compact manifold $M$ and a Riemanninan manifold $N$. Thus we have to consider more complicated Riemannian metrics using lenght or curvature, and we do this in a systematic Hamiltonian way, we derive geodesic equations and split them into horizontal and vertical parts, and compute all conserved quantities via the momentum mappings of several invariance groups (Reparameterizations, motions, and even scalings). The resulting equations are relatives of well known completely integrable systems (Burgers, Camassa Holm, Hunter Saxton). A certain scale invariant geometry on $Imm(S^1,\mathbb R^2)$ is diffeomorphic to to the Grassmannian of 2-planes in a pre-Hilbert space. Since for the latter one can write down geodescs explicitly, following a Neretin from 2000, we have explicit solutions for the distance, geodesics, and curvature. This gives a computatable distance on shape space $Imm(S^1,\mathbb R^2)/Diff(S^1)$, with curvature. Some of these metrices have already found applications in computational anatomy: One can compute from the tomographic data of hearts whether the person is prone to develop cardiac rhythmic disturbances.
Thu 12 Jun 2008 16:00 MB, room D Dr. Taras Skrypnyk (SISSA) Dual R-matrix integrability
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Thu 12 Jun 2008 14:30 MB, room C Prof. Ugo Bruzzo (SISSA) Semistable principal Higgs bundles
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Wed 11 Jun 2008 14:30 MB, room E Antonio Lerario (SISSA) Introduzione alla teoria di Morse
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Tue 10 Jun 2008 14:30 MB, room C Dr. A. V. Kiselev (Utrecht) Operator-valued involutive distributions of evolutionary vector fields and their affine geometry
Abstract. Involutive distributions of evolutionary vector fields that belong to images of matrix operators in total derivatives are considered and some classifications of the operators are obtained. In particular, we describe endomorphisms of evolutionary derivations whose images are closed w.r.t. the commutation and which induce hierarchies of Lie algebra structures on the infinite jet spaces. Analysis of the deformation problem for the operators suggests to distinguish their homotopy compatibility as the analog of the Poisson pencils for Hamiltonian structures and the strong compatibility as the commutation closure of sums of images for N-tuples of the operators. This allows to endow the spaces of totally compatible operators, which may not be the endomorphism solutions of the classical Yang-Baxter equations, with a Lie algebra structure specified by bi-differential structural constants. We show that the operators with closed images determine flat non-Cartan connections on the module of evolutionary vector fields such that the structural constants of the Lie algebras are bi-differential Christoffel's symbols, and we conclude that completely integrable hierarchies are the geodesics. Also, differential complexes are constructed using the operators, which leads to a realization of Lie algebroids over jet spaces in terms of homological vector fields. A class of matrix operators, whose images are closed w.r.t. the commutation, and the Koszul brackets induced in their pre-images are assigned to integrable KdV-type hierarchies of symmetry flows on the hyperbolic Euler-Lagrange Liouville-type systems (e.g., on the open 2D Toda lattices associated with semi-simple Lie algebras). (following arXiv:math-ph/0703082 , joint with Johan W. van de Leur)
Mon 9 Jun 2008 14:30 MB, room D Prof. Ramakrishnan Ramadas (ICTP) A gauge-theoretic approach to the Hodge conjecture for certain abelian fourfolds
Abstract.
Fri 6 Jun 2008 12:00 MB, room C Andrea Parri (SISSA) Quantify Quantum Entanglement in terms of Lie Group Invariants
Abstract. The "Restricted Fundamental Problem of Quantum Entanglement" (RFPQE) reduces to the mathematical problem of determining the orbits of the big adjoint action of the group of local unitary transformations \otimes_1^n SU(2) on the Lie algebra of the unitary group U(2^n). We attack this problem by lifting the above big adjoint action to the induced infinitesimal action. The induced infinitesimal action can then be used to quantify and to classify quantum entanglement through the construction of a complete set of quantum entanglement invariants. During this seminar, every effort will be taken to make the above sneak preview more transparent and understandable. The goal is to present the underlying intuitions without getting lost in an obscure haze of technicalities.
Thu 5 Jun 2008 14:30 MB, room C Dr. Antonio Moro (Loughborough University) Integrable regimes in nonlocal nonlinear optics
Abstract. Nonlocal nonlinear optics (NNO) is one of the most important developments in modern optics. In the recent years it was shown that nonlocality plays a crucial role in the propagation of stable spatial "solitons" in three dimensions. The problem of the integrability of these kind of systems is still open, and, apart few (very interesting) cases the main theoretical results on the behaviour of solutions are obtained numerically. Most of the models in NNO are based on a nonlocal nonlinear Schrodinger (NNLS) type equation. The dispersionless limit of the NNLS equation is equivalent to the geometric optics limit. We analyze in detail singular phase solutions and introduce a class of integrable nonlocal perturbations. We also discuss the possibility to introduce wave(dispersive)-deformations for different nonlocal models.
Wed 4 Jun 2008 14:30 MB, room C Prof. Marco Manetti () Periods of generalized deformations
Abstract. A generalized deformation of a complex manifold is defined algebraically as a solution, up to gauge, of the Maurer-Cartan equation in the algebra of polyvector fields. We show that in the Kaehler case, every generalized deformation gives canonically holomorphic maps into the Grassmannian of graded subspaces of the De Rham cohomology. For classical deformations the above maps reduces to Griffiths period maps.
Tue 3 Jun 2008 16:00 MB, room C Prof. L. Ramero (Lille I) Local systems on the punctured disc
Abstract. We consider local systems of F-modules on the etale site of the p-adic punctured disc, where F is the algebraic closure of a finite field of characteristic different from p. We explain how such local systems admit a canonical decomposition which is fully analogous to the "break decomposition" for l-adic representations of a complete DVR of characteristic p.
Tue 3 Jun 2008 16:00 MB, room B Dr. M. Correggi (Scuola Normale Superiore di Pisa) Vortices in Rotating Bose-Einstein Condensates
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Fri 30 May 2008 14:30 MB, room C Dr. V. Dragovic (Belgrade) Poncelet porisms and beyond
Abstract. We start from the set $T$ of lines in $\mathbf R^d$ simultaneously tangent to $d-1$ quadrics from a given confocal family. We analyse its structure and derive a fundamental property of $T$: any two lines from this set can be obtained from each other by at most $d-1$ billiard reflections at some quadrics from the confocal family. We introduce two hierarchies of notions: {\em $s$-skew lines} in $T$ and {\em $s$-weak Poncelet trajectories}, $s=-1,0,...,d-2$. The interrelations between billiard dynamics, linear subspaces of intersections of quadrics and hyperelliptic Jacobians developed in our joint paper with M. Radnovic (arXiv 0710.3656) enabled us to obtain higher-dimensional and higher-genera generalizations of several classical genus $1$ results.
Thu 29 May 2008 14:30 MB, room C Prof. Barbara Fantechi (SISSA) Inertia Stack of \overline{M}_{g,n}
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Thu 29 May 2008 11:00 MB, room C A L. Stefanini (Zurich) Integration of quotient Poisson manifolds
Abstract. After introducing the main facts about the integration of Poisson manifolds to symplectic groupoids, we shall discuss the integrability of quotients of Poisson manifolds under compatible Poisson grooupoid actions.
Thu 29 May 2008 09:30 MB, room C Prof. J. Bellissard (Georgia Institute of Technology) The Riemannian Geometry of the Atomic Surfaces
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Wed 28 May 2008 09:30 MB, room D Prof. J. Bellissard (Georgia Institute of Technology) Coherent and Dissipative Transport
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Tue 27 May 2008 09:30 MB, room C Prof. J. Bellissard (Georgia Institute of Technology) Construction of the Noncommutative Brillouin zone
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Mon 26 May 2008 16:30 MB, room D Prof. J. Bellissard (Georgia Institute of Technology) The Noncommutative Geometry of Aperiodic Solids
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Thu 22 May 2008 14:30 MB, room C Fabio Nironi (SISSA) Moduli Spaces of Stable Sheaves on Deligne-Mumford Stacks
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Mon 19 May 2008 14:30 MB, room D Dr. Gianluca Panati () Geometric currents in piezoelectricity
Abstract. Multiscale and adiabatic methods play a fundamental role in the analysis of physical systems. In the talk, I will illustrate this principle, at a non technical level, in the specific case of piezoelectricity. As a simple model for piezoelectricity we consider a gas of noninteracting electrons subject to a slowly varying time-dependent periodic potential. We will see that in the adiabatic limit the macroscopic current is determined by the geometry of the Bloch bundle. As a consequence we obtain the King-Smith and Vanderbilt formula up to errors smaller than any power of the adiabatic parameter.
Thu 15 May 2008 14:30 MB, room C Prof. Barbara Fantechi (SISSA) Virtual Grothendieck-Riemann-Roch Theorem
Abstract. This is a report on a joint work with L. Goettsche. We state and prove a Grothendieck-Riemann-Roch theorem for morphism of virtually smooth schemes (i.e., schemes with a perfect obstruction theory) and discuss some apllications.
Mon 12 May 2008 14:30 MB, room D Dr. Claudio Fontanari () Algebraic curves and moduli: a friendly introduction
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Thu 8 May 2008 14:30 MB, room C Cristina Manolache (SISSA) Virtual Gysin Map and Gromov-Witten Invariants for Blow ups
Abstract. The purpose of the seminar is to show that virtual classes are a natural generalization of classical intersection theory. Precisely, I will construct a "virtual-pullback", for morphisms of Deligne-Mumford type and show it satisfies the usual functoriality properties. As an application I will analyze Gromov-Witten Invariants of blow-ups.
Wed 7 May 2008 17:30 MB, room A Andrea Parri (SISSA) Esistenza ed unicita' per sistemi di particelle interagenti
Abstract. Si riassumeranno i principali passaggi della costruzione di sistemi di particelle interagenti, dalle probabilita' di transizione infinitesime ai generatori markoviani e dai generatori ai corrispondenti semigruppi. Si vedranno alcune conseguenze della costruzione riguardanti l'ergodicita' del processo ed il comportamento asintotico delle sue correlazioni.
Mon 5 May 2008 14:30 MB, room D Prof. Gregorio Falqui (Milano Bicocca) Manin matrices and determinantal formulas in quantum spin models
Abstract. In this talk we will first review the notion of classical and quantum integrable system with a Lax representation of special classes (to be called "spin" type systems). Then we will discuss the notion of "Manin matrix" and frame (some of) the relevant properties of these systems within this scheme.
Wed 30 Apr 2008 14:30 MB, room D Fabio Nironi (SISSA) Grothendieck Duality
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Tue 29 Apr 2008 14:30 MB, room D Dr. C. Borean (Generali) A random walk on the markets: what a physicist can do for the development of quantitative finance
Abstract. In the last four decades the contribution from the scientific environment to the solution of financial investments decisions and asset valuation problems have been remarkable. In particular it is important to mention the improvements achieved due to the application of stochastic calculus (i.e. well known Merton-Black-Scholes application to the pricing of complex financial instruments like derivatives) and the adoption of modeling and optimal control theory (Markowitz portfolio optimization, Capital Asset Pricing Model, portfolio non gaussian models with fat tailed distributions of returns or application of extreme value theory, risk control and management techniques). Modern finance deals with complex models which widely adopt routines and algorithms initially developed for both experimental and theoretical physics purposes, i.e. minimization of functions with multiple minima, monte-carlo simulation, grid computing, neural networks, complex parameter estimation techniques. We will also discuss some examples of these application to the investment decision making process of Assicurazioni Generali S.p.A.
Wed 23 Apr 2008 14:00 MB, room C Dr. Alexander Pavlov () A C*-analogue of Kazhdan's property (T)
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Thu 17 Apr 2008 11:00 MB, room C Cyril Levy (ENS, Lyon) The spectral action in noncommutative spaces: Torus vs. SU_q(2)
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Thu 6 Mar 2008 16:00 MB, room D Mattia Cafasso (SISSA) Orthogonal polynomials and integrable equations
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Thu 6 Mar 2008 11:00 MB, room D Nicola Pagani (SISSA) The orbifold cohomology ring of the moduli spaces of elliptic curves with marked points and their Deligne-Mumford compactifications II
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Tue 4 Mar 2008 11:00 MB, room D Nicola Pagani (SISSA) The orbifold cohomology ring of the moduli spaces of elliptic curves with marked points and their Deligne-Mumford compactifications I
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Fri 29 Feb 2008 16:00 MB, room D Dr. Eugene Ferapontov (Loughborough University) Geometry and integrability of second order quasilinear PDEs
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Thu 28 Feb 2008 16:00 MB, room D Prof. A. Botvinnik (University of Oregon and IHES) Moduli spaces of metrics with positive scalar curvature III
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Wed 27 Feb 2008 14:00 MB, room D Prof. A. Botvinnik (University of Oregon and IHES) Moduli spaces of metrics with positive scalar curvature II
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Mon 25 Feb 2008 14:00 MB, room C Alejo Keuroghlanian (SISSA) Elementary applications of Grobner bases
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Fri 22 Feb 2008 11:00 MB, room C Prof. V. Golyshev (Steklov Math. Institute, Moscow, and MPIM, Bonn) Vanishing cycles and exceptional collections
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Thu 21 Feb 2008 16:00 MB, room C Prof. A. Botvinnik (University of Oregon and IHES) Moduli spaces of metrics with positive scalar curvature I
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Thu 7 Feb 2008 16:00 MB, room D Prof. A. Its (IUPUI (Indianapolis)) The Riemann-Hilbert approach in the theory of Toeplitz and Hankel determinants II
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Thu 31 Jan 2008 16:00 MB, room D Prof. A. Its (IUPUI (Indianapolis)) The Riemann-Hilbert approach in the theory of Toeplitz and Hankel determinants I
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Wed 30 Jan 2008 16:00 MB, room C Dr. Simon Brain (SISSA) Morita equivalence and the Penrose twistor transform
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Wed 16 Jan 2008 14:30 MB, room D Prof. Nurowski (Warsaw/SUNY) GL(2,R) geometry of ODEs
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Thu 10 Jan 2008 16:00 MB, room D Paolo Rossi (SISSA) Fermionic techniques in quantum integrable systems
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