### Seminari

### Prossimi Seminari

**Computational Prediction of Blood Damage**

Marek Behr, Chair for Computational Analysis of Technical Systems Faculty of Mechanical Engineering, RWTH Aachen

lunedì 1 ottobre 2018 alle ore 14:00, Aula Consiglio VII Piano – Edificio 14, Dipartimento di Matematica POLITECNICO DI MILANO**Caputo Evolution Equations with time-nonlocal initial condition**

Lorenzo Toniazzi, University of Warwick

martedì 9 ottobre 2018 alle ore 15:15, Aula Seminari 3° piano**Statistical modeling and monitoring of product and process quality in Additive Manufacturing: opportunities and challenges**

Bianca Maria Colosimo, Dipartimento di Meccanica, Politecnico di Milano

giovedì 11 ottobre 2018 alle ore 14:00, Aula Consiglio VII Piano – Edificio 14, Dipartimento di Matematica POLITECNICO DI MILANO**Elastic waves in soft tissues: inverse analysis, experiments, simulations, validation**

Michel Destrade, Chair of Applied Mathematics at NUI Galway

giovedì 18 ottobre 2018 alle ore 14:00, Aula Consiglio VII Piano – Edificio 14, Dipartimento di Matematica POLITECNICO DI MILANO**An overview of some mathematical and computational problems in Network Science**

Michele Benzi, Scuola Normale Superiore, Pisa

giovedì 22 novembre 2018 alle ore 14:00, Aula Consiglio VII Piano – Edificio 14, Dipartimento di Matematica POLITECNICO DI MILANO**BIRATIONAL EQUIVALENCE OF ALGEBRAIC VARIETIES**

Shigefumi Mori, Kyoto University Institute of Advanced Study

lunedì 26 novembre 2018 alle ore 16:30, Aula Chisini, Diparimento di Matematica, Via C. Saldini 50

### Seminari Passati

**Quasistationary Penrose-Fife Model with Neumann Boundary Conditions.**

Anastasia Klepatcheva, Politecnico di Milano

giovedì 15 maggio 2003 alle ore 17:15, Aula seminari III piano, Dip. di MatematicaABSTRACTWe study the problem of the existence of a global solution to the quasistationary phase field model of the Penrose-Fife type.

We prove the existence of approximate solutions and obtain a priori estimate.**Quasistationary Penrose-Fife Model with Neumann Boundary Conditions**

Anastasia Klepatcheva, Dip. di Matematica Politecnico di Milano

giovedì 15 maggio 2003**The classical limit of the relativistic Vlasov-Maxwell system in two space dimensions**

Hayoung Lee Max Planck, Institute for Gravitational Physics

giovedì 15 maggio 2003**Il sistema solare: un orologio perfetto o una Babele ben mascherata? (I parte)**

A. Giorgilli, Univ. Milano Bicocca

mercoledì 14 maggio 2003 alle ore 12:30, aula consiglio VII piano**Blackholes vs. naked singularities formation in gravitational collapse: analytical and numerical results and perspectives.**

Giulio Magli, Dipartimento di matematica F. Brioschi

lunedì 12 maggio 2003 alle ore 14:30, aula seminari MOX- 6° piano dip. matem.ABSTRACTIn 1969 Roger Penrose proposed the so called Cosmic Censorship

conjecture, namely the idea that all gravitating systems

undergoing complete gravitational collapse – such as very massive

stars – should always form blackholes. In other words, the

conjecture states that all singularities eventually forming will

be safely hidden to far-away observers by a event horizon. From

the mathematical point of view the conjecture can be read off as

a characterization of the geodesic motion (governed by o.d.e.) in

a gravitational field assumed to be a solution of the Einstein

field equations (a system of p.d.e.), with the addition of

reasonable physical assumptions. No proof of the conjecture is

available so far, while several examples of physically sound

systems exhibiting naked singularities have been found. In recent

years, the application of techniques coming from non-linear

o.d.e. analysis allowed to construct a new mathematical framework

for censorship experiments which can be used in problems so far

considered unsolvable, such as the gravitational collapse of

barotropic perfect fluids. Parallel, relevant results obtained by

other groups working in the numerical simulation of gravitational

collapse will also be reviewed.

**Estimating Unobserved Probability and the Number of Unobserved Outcomes of an Experiment**

Chelluri C.A. Sastri, Dalhousie University, Halifax (Canada)

lunedì 12 maggio 2003 alle ore 16:00, Dipartimento di Matematica e Applicazioni – Università degli Studi di Milano Bicocca – Via Bicocca degli Arcimboldi, 8 – Aula 371ABSTRACTSuppose that an experiment with an unknown, possibly infinite, number of outcomes is performed and that these outcomes occur according to some random mechanism. Suppose that n independent trials are carried out and that N distinct outcomes have been observed. We attempt to answer the following questions: What is the probability that, on the next trial, an outcome not observed before occurs? (This is called the problem of unobserved probability.) What is the total number of outcomes not observed? This second problem has a long history going back to Turing and is, apart from its mathematical interest, important in many areas such as biology (species sampling), numismatics, and literary scholarship. We’ll give a brief survey of past work and also discuss recent joint work with Alberto Gandolfi in which a Bayes-like estimator for the number of unobserved outcomes is derived. This has the advantage over the existing estimators — due to Chao and Lee and others — in that, modulo the fact that Turing’s ansatz is used (it is used by everyone else as well), it is derived from first principles, without any ad hoc assumptions, and includes previous estimators as special cases. We’ll also briefly discuss an almost complete classification of infinite discrete probability measures, which emerges as a by-product of a solution we have obtained for the problem of unobserved probability.**Presentazione del Corso di Studi in Ingegneria Matematica**

Proff. A.Quarteroni, F.Saleri, S.Salsa, P.Secchi, A.Veneziani

sabato 10 maggio 2003 alle ore 09:30, Aula S05 (replica ore 11:30 e 14:45, stessa aula)**A variational approach to double-porosity problems**

Valeria Chiad•, Piat Dip. di Matematica Politecnico di Torino

mercoledì 7 maggio 2003