Notiziario Scientifico
Settimana dal 14 al 20 luglio 2014
Lunedì 14 luglio 2014
Martedì 15 luglio 2014
Giovedì 17 luglio 2014
Giovedì 17 luglio 2014
Giovedì 17 luglio 2014
Tutte le informazioni relative a questo notiziario devono pervenire
all'indirizzo di posta elettronica
seminari@mat.uniroma1.it
entro le ore 9 del venerdì precedente la settimana di pubblicazione.
Ore 11:00, Aula 50 (palazzina G, viale Regina Elena 295), Dipartimento di Scienze Statistiche
Competing Risks Predictions on Two Time Scales
Jason Fine (Department of Biostatistics; Department of Statistics, UNC-Chapel Hill)
Representation, estimation and prediction in multi-state models - the obstacles of multiple time
scales
Bendix Carstensen (STENO Diabetes Center; Department of Statistics, University of Copenhagen)
Random coefficient based dropout models: a finite mixture approach
Marco Alfò, Alessandra Spagnoli (Dipartimento di Scienze Statistiche, Sapienza Universita' di
Roma)
Ore 14:30, Aula Dal Passo, Università di Roma II
Seminario di Equazioni Differenziali
In this talk we will address the so-called Toda System, posed either on compact surfaces or on
planar domains (under Dirichlet boundary conditions). In the first part of the talk, we will give
some comments on the Leray Schauder degree. As a consequence we will derive new existence results.
Motivated by the above discussion on the degree, in the second part of the talk we will consider the
existence of blow-up solutions. For the Toda System, one expects the existence of continua of
blow-up solutions. We shall give some results in this direction.
Ore 10:30, Aula dei Seminari (sezione di Fisica), Dipartimento SBAI
Seminario di Analisi Matematica
Steiner symmetrization is a very useful tool in the study of isoperimetric inequality. This is also
due to the fact that the perimeter of a set is less or equal than the perimeter of its Steiner
symmetral. In the same way, in the Gaussian setting, it is well known that Ehrhard symmetrization
does not increase the Gaussian perimeter. We will show characterization results for equality cases
in both Steiner and Ehrhard perimeter inequalities. We will also characterize rigidity of equality
cases. By rigidity, we mean the situation when all equality cases are trivially obtained by a
translation of the Steiner symmetral (or, in the Gaussian setting, by a reflection of the Ehrhard
symmetral). We will achieve this through the introduction of a suitable measure-theoretic notion of
connectedness, and through a fine analysis of the barycenter function for a special class of sets.
These results are obtained in collaboration with Maria Colombo, Guido De Philippis, and Francesco
Maggi.
Ore 15:00, Aula 1B1
Seminario di Geometria
The Steklov problem is an eigenvalue problem with the spectral parameter in the boundary conditions.
It has many physical applications, particularly to hydrodynamics, vibration theory, etc. Recently,
there has been a growing interest in the Steklov problem from the viewpoint of spectral geometry. I
will discuss some recent advances, in particular on the study of spectral invariants, eigenvalue
estimates and asymptotics. The talk is based on joint works with Alexandre Girouard (Université
Laval), Leonid Parnovski (University College London) and David Sher (University of Michigan).
Ore 16:15, Aula 1B1
Seminario di Geometria
There is a "long journey" that begins with the formal calculus of the Jacobi identities for vertex
operator algebras and modules, passes through complex analysis, Galois theory, generalized
commutators and anticommutators for standard representations of affine Lie algebras, and leads to
partition identities in which the parts are restricted by differences and congruences. The similar
nature of the combinatorial analysis of the Jacobi identity, at the beginning, and the combinatorics
of the partitions, at the end, suggests that part of this journey may be circular.
Tutti coloro che desiderano ricevere questo notiziario via e-mail sono
invitati a comunicare il proprio indirizzo di posta elettronica a
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