### 11/07/2002, 15:00 — 16:00 — Room P3.10, Mathematics Building

Jonathan Wattis, *University of Nottingham*

### The kinetics of vesicle formation

### 25/06/2002, 15:00 — 16:00 — Room P3.10, Mathematics Building

João Paulo Santos, *Instituto Superior Técnico*

### Holomorphic bundles on blown up surfaces

### 18/06/2002, 15:00 — 16:00 — Room P3.10, Mathematics Building

Rasul Shafikov, *State University of New York, Stony Brook*

### Holomorphic equivalence of domains in ${\u2102}^{n}$

### 11/06/2002, 15:00 — 16:00 — Room P3.10, Mathematics Building

Matthias Wolfrum, *Weierstrass Institute for Applied Analysis and Stochastics, Berlin*

### Heteroclinic connections and order structures for scalar parabolic PDE

### 06/06/2002, 11:00 — 12:00 — Room P3.10, Mathematics Building

Eran Makover, *Connecticut College, EUA*

### Random Construction of Riemann Surfaces

What are the geometric properties of a typical Riemann surface of large genus? In a joint work with Robert Brooks we address this problem by constructing compact Riemann surfaces from random cubic graphs. The resulting surfaces form a dense set in the set of all Riemann surfaces. This construction enables us to investigate the geometry of Riemann surfaces using the geometry of random graphs. The resulting picture is an interesting mix of techniques from Riemannian geometry, complex analysis, and probability theory, and contains some surprising answers.

### 29/05/2002, 17:00 — 18:00 — Room P3.10, Mathematics Building

Christian Mira, *TLSE-INSA, Toulouse*

### Qualitative behavior of two-dimensional maps with a vanishing denominator

### 28/05/2002, 15:30 — 16:30 — Room P3.10, Mathematics Building

Piero Negrini, *Universitá di Roma La Sapienza*

### Chaotic behaviour in the $n$ center problem (negative energy levels)

### 28/05/2002, 14:00 — 15:00 — Room P3.10, Mathematics Building

Giorgio Fusco, *Università degli Studi dell'Aquila*

### Crystalline energy as $\Gamma $-limit of a constrained perimeter functional

### 21/05/2002, 15:00 — 16:00 — Room P3.10, Mathematics Building

Rui Vilela Mendes, *Universidade Técnica de Lisboa*

### Expoente de Lyapunov em Mecânica Clássica e Quântica. Uma abordagem tomográfica

### 14/05/2002, 15:00 — 16:00 — Room P3.10, Mathematics Building

Rui Loja Fernandes, *Instituto Superior Técnico*

### Integrability of Poisson brackets

### 07/05/2002, 15:00 — 16:00 — Room P3.10, Mathematics Building

David Costa, *University of Nevada, Las Vegas*

### The Jumping Nonlinearity Problem Revisited

### 30/04/2002, 15:00 — 16:00 — Room P3.10, Mathematics Building

Ricardo Coutinho, *Instituto Superior Técnico*

### Frentes em sistemas extensos de aplicações bi-estáveis acopladas via convoluções

### 23/04/2002, 15:00 — 16:00 — Room P3.10, Mathematics Building

Maria João Borges, *Instituto Superior Técnico*

### Homoclinic and Heteroclinic solutions of a Singular Hamiltonian System

### 16/04/2002, 15:00 — 16:00 — Room P3.10, Mathematics Building

Pedro J. Freitas, *Universidade de Lisboa*

### The dynamics of the Siegel Upper Half Plane

We will present the classification of the isometries of the hyperbolic plane, and the definition of some concepts like limis sets. We'll then generalize some of these definitions results for the action of the symplectic group on the Siegel upper half plane - we'll define both the group and the half plane, and present some basic results about them. We'll also mention a few different ways of compactifying the half plane.

### 09/04/2002, 15:00 — 16:00 — Room P3.10, Mathematics Building

David Evans, *Cardiff University*

### Modular invariants and subfactors

Braided subfactors provide a natural framework for understanding modular invariant partition functions in rational conformal field theory. Here we outline some of the mathematical structures in the underlying operator algebraic framework.

### 02/04/2002, 15:00 — 16:00 — Room P3.10, Mathematics Building

João Lopes Dias, *University of Cambridge*

### Renormalisation of vector fields

### 26/03/2002, 15:00 — 16:00 — Room P3.10, Mathematics Building

Jörg Neunhäuserer, *Technische Universität Clausthal*

### A result on overlapping self-similar measures and its applications

### 21/03/2002, 14:00 — 15:00 — Room P3.10, Mathematics Building

Roman Hric, *Centro de Análise Matemática, Geometria e Sistemas Dinâmicos*

### Topological characterization of minimal sets in one dimension

### 21/03/2002, 11:00 — 12:00 — Room P3.10, Mathematics Building

Francisco Balibrea, *Universidad de Murcia*

### On the periodic structure of delayed difference equations on
$I$ and
${S}^{1}$

### 21/03/2002, 10:00 — 11:00 — Room P3.10, Mathematics Building

Lubomír Snoha, *Matej Bel University, Banská Bystrica*

### Topological entropy of Devaney chaotic maps