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Torino - Lezione Lagrangiana M. Hairer - 13 Novembre
by Enrico Priola 31 Oct '18

31 Oct '18

Annuncio Lezione Lagrangiana al Dipartimento di Matematica "G. Peano", Universita` di Torino Martedì 13 novembre alle ore 16.30 in Aula A Martin Hairer (Imperial College, London) "Taming Infinities" Abstract: Some physical and mathematical theories have the unfortunate feature that if one takes them at face value, many quantities of interest appear to be infinite! What's worse, this doesn't just happen for some exotic theories, but in the standard theories describing some of the most fundamental aspects of nature. Various techniques, usually going under the common name of “renormalisation” have been developed over the years to address this, allowing mathematicians and physicists to tame these infinities. We will tip our toes into some of the conceptual and mathematical aspects of these techniques and we will see how they have recently been used to study equations whose meaning was not even clear until now. Tutti gli interessati sono invitati a partecipare. Enrico Priola Dipartimento di Matematica Universita' di Torino via Carlo Alberto 10, 10123 TORINO, Italy tel +39 011 6702883 fax +39 011 6702878

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The Aldous spectral gap phenomenon: seminario di Filippo Cesi il 14-11-2018 a Roma Tre
by Pietro Caputo 31 Oct '18

31 Oct '18

Prof. Filippo Cesi Universita' La Sapienza Roma Titolo: THE ALDOUS' SPECTRAL GAP PHENOMENON Mercoledi' 14 Novembre 2018 ORE 16:00 Dipartimento di Matematica e Fisica Universita' degli Studi Roma Tre Largo San Leonardo Murialdo, 1 - Pal.C - Aula 211 Abstract: Some families of Markov chains have a spectral gap which coincides with the spectral gap of an extremely simplified version of the chain. Another way of restating the same concept is: some families of Cayley graphs have a spectral gap which can be found in a very low dimensional representation of the underlying group. We will present a general approach which could be useful when going fishing for this phenomenon in an arbitrary finite group. Two specific examples will be discussed: the case of the symmetric group which corresponds to the "original" Aldous' spectral gap conjecture, proven in 2010 by Caputo, Liggett and Richthammer, and case of the Weyl group W(B_n) we studied in a recent paper.

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Postdoc - Hokkaido University
by Paolo Dai Pra 30 Oct '18

30 Oct '18

Vi inoltro l'annuncio di una borsa postdoc alla Hokkaido University. Paolo Dai Pra %%%%%%%%%%%%%%%%%%%%%%% I announce a Postdoc position in my group project under the CREST project ``Technology for Computing Revolution for Society 5.0": http://www.jst.go.jp/kisoken/crest/en/research_area/ongoing/areah30-4.html Team Hokkaido is trying to build a new computing system based on the Ising model. The team consists of four groups, one of which is my Mathematical Science Group. There are 11 other members, 4 of which are faculty members, 7 others are graduate students. We are investigating the following problems rigorously: 1. Find a best possible embedding of an Ising model on a irregular graph to an Ising model on a given regular graph. 2. Find the ground state of the above Ising model on the regular graph by a sampler faster than, say, Glauber dynamics. 3. Find how stable the ground state is against noise in coupling coefficients and/or external magnetic fields. 4. Find killer applications of the Ising computer. The posdoc position is a 2-year position, starting from April 2019 the earliest, with possible 2-year extension (depending on performance). The net salary will be ranging from 3,769,524 JPY to 5,689,524 JPY (depending on previous experiences). The deadline of application (send via email a CV and a list of publications to: sakai(a)math.sci.hokudai.ac.jp) is set on December 15, 2018. Best regards, Akira Sakai Department of Mathematics Hokkaido University Nishi 8-chome, Kita 10-jo, Kita-ku Sapporo, Hokkaido 060-0810 JAPAN http://www.math.sci.hokudai.ac.jp/~sakai sakai(a)math.sci.hokudai.ac.jp

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Seminario a Bologna del prof. Macci
by Massimo Campanino 29 Oct '18

29 Oct '18

Il giorno mercoledì 7 novembre alle ore 17 nell'aula al VII piano del Dipartimento di Matematica dell'Università di Bologna in piazza Porta S. Donato 5 il prof. Claudio Macci del Dipartimento di Matematica dell'Università di Roma Tor Vergata terrà un seminario dal titolo Asymptotic behavior of some hitting probabilities for sums of IID Gaussian random sets Abstract: We consider sequences of partial sums of iid Gaussian random sets (with respect to the Minkowski sum) and we study t he asymptotic behavior of some hitting probabilities (of suitable sets of $R^d$) for these partial sums. We also illustrate the use of the importance sampling for the estimation of these hitting probabilities by Monte Carlo simulations. We obtain the analog of well-known results for level crossing probabilities of random walks, and we refer to a version of the classical Cramér's Theorem in large deviations for random compact sets existing in the literature. Joint work with Barbara Pacchiarotti

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Seminario di Probabilita`, Universita` La Sapienza
by Faggionato, Alessandra 26 Oct '18

26 Oct '18

Martedi` 30 Ottobre alle ore 14 in Aula di Consiglio, Dipartimento di Matematica, Universita` La Sapienza, ci sara' il seguente seminario: Speaker: Giacomo di Gesu' (Universita' di Vienna) Title: Small noise asymptotics for stochastic Allen-Cahn equations in finite volume Abstract: We consider lattice approximations of the Allen-Cahn equation on the torus perturbed by small space-time white noise and discuss metastable transition times between the two stable phases. Grazie per l'attenzione ************************************************* Prof. Alessandra Faggionato http://www1.mat.uniroma1.it/~faggionato/ Department of Mathematics University "La Sapienza" Piazzale Aldo Moro, 5 00185 - Rome Office 5, Phone (0039) 06 49913252 *************************************************

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Assegno di Ricerca - UNIMI
by Giacomo Aletti 25 Oct '18

25 Oct '18

Gentili Colleghi, vi segnalo che, presso il Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, è stato bandito un assegno di ricerca di tipo B della durata di 12 mesi nell'ambito del scientifico-disciplinare delle Scienze matematiche e informatiche. BANDO: http://www.unimi.it/ricerca/assegni_ricerca/124378.htm SCADENZA: 16/11/2018. La ricerca si svolge nell'ambito nell’ambito del programma di ricerca dal titolo “Quantitative analysis of agricultural land use changes due to the new greening payment in Lombardy”, e richiede le attività che sono sinteticamente qui riportate: 1) Data cleaning 2) Data integration 3) Model development 4) Code writing 5) Data Analysis 6) Reports/Papers writing Si prega di darne massima diffusione. Cordialmente, Giacomo Aletti -- ------------------------------- Giacomo Aletti, Full Professor (Probability Theory and Mathematical Statistics) Department of Environmental Science and Policy (ESP) ADAMSS Centre (ex MIRIAM) Advanced Applied Mathematical and Statistical Sciences Università degli Studi di Milano Via Saldini, 50 20133 Milano, Italy Tel: +39-02-503.16158 Fax:+39-02-503.16090 Cell: +39-340-9739142

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Seminario tra Geometria e Probabilita' di Daniele Agostini a Roma Tre il 29-10-2018
by Pietro Caputo 23 Oct '18

23 Oct '18

Daniele Agostini (Max-Plank Institute fur Mathematik, Leipzig) Titolo: Discrete Gaussians, theta functions and abelian varieties Lunedi' 29 Ottobre 2018 ORE 14:30 Dipartimento di Matematica e Fisica Universita' degli Studi Roma Tre Largo San Leonardo Murialdo,1 - Pal.C - Aula 009 Abstract The Gaussian distribution is a central object in mathematics and it can be characterised as the unique probability on the real numbers that maximises entropy, for fixed mean and variance. It turns out that the same property can be used to define a discrete Gaussian distribution on the integers. Moreover, the discrete Gaussian is parametrised naturally by the Riemann theta function, and, as such, it has a natural connection to the theory of abelian varieties in algebraic geometry. The aim of the talk is to present this connection and to show how question in probability give rise to natural problems in algebraic geometry and viceversa. This is joint work with Carlos Amendola (TU Munich).

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Workshop in Financial Mathematics in Padova
by Giorgia Callegaro 22 Oct '18

22 Oct '18

Dear colleagues, we are pleased to announce that the (mini) “Workshop in Financial Mathematics” will be held the 12 November 2018 at the Department of Mathematics of the University of Padova. The Workshop will start at 2.30 pm (in “Sala Riunioni” VII floor, stairs B) and it will finish at 6pm. The list of invited speakers is available at the conference website: https://events.math.unipd.it/WFM2018/node/1 There is no registration fee, but all participants are kindly requested to register to the Workshop via the online form available here: https://events.math.unipd.it/WFM2018/node/27 See you in Padova! The organising committee Giorgia Callegaro Martino Grasselli Wolfgang Runggaldier Tiziano Vargiolu -- Giorgia Callegaro Assistant Professor Department of Mathematics - University of Padova Via Trieste 63 , I-35121 Padova - ITALY Tel: +39-0498271481 Fax: +39-0498271499 E-Mail: gcallega(a)math.unipd.it <https://webmail.math.unipd.it/horde3/imp/message.php?mailbox=Sent&index=598#> Personal web-page: https://sites.google.com/site/giogiocallegaro/Home

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(senza oggetto)
by Massimo Campanino 22 Oct '18

22 Oct '18

Il giorno giovedì 15 novembre alle ore 16 nell'aula Seminario 2 del Dipartimento di Matematica dell'Università di Bologna (pazza Porta S. Donato 2) il dott. Gianluca Bosi dell'Università di Bologna terrà un seminario dal titolo Revolving random walks in 2D: analysis of type and winding number. We consider simple random walks on two directed versions of the $\mathbb{Z}^2$ lattice; one characteristic feature of these random walks is that they are bound to revolve, according to the orientation prescribed by the edges. The first model was studied by Campanino and Petritis(‘03) and shown to be transient; the other one appeared recently in a paper by Menshikov et al. (’17), where the authors conjectured its recurrence. We shall indeed confirm this conjecture: our proof is done by considering a continuous analogue of the random walk and then applying the Lyapunov function criteria. On the other hand, we obtain a local limit theorem for the return probabilities of the first random walk, which in particular gives a new proof of transience. Finally, we deduce some results related to the winding number for both random walks. This results are joint work with Y.Peres (Microsoft Research, Redmond) and Y.Hu (University of Washington).

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Fwd: RS&A2019
by Gustavo Posta 22 Oct '18

22 Oct '18

Begin forwarded message: > From: The 19th International Conference on Random Structures and Algorithms <rsa2019(a)amu.edu.pl> > Date: 22 ottobre 2018 13.51.37 GMT+02.00 > To: ukryci-adresaci: ; > Subject: RS&A2019 > > > > The 19th International Conference on > RANDOM STRUCTURES AND ALGORITHMS > Zurich, 15-19 July, 2019 > > > We are pleased to announce that the 19th International Conference on Random Structures and Algorithms "RS&A2019" will be held at the ETH in Zurich, 15-19 July, 2019. > > The list of invited speakers is available at the conference website: https://www.math.ethz.ch/fim/conferences/19th-int-conf-random-structures-al…; > the registration is already open: https://www.math.ethz.ch/fim/conferences/19th-int-conf-random-structures-al…. > > We have some limited funding (in terms of accommodation and a per diem) available for graduate students or postdocs. The application form can be found under the link: https://www.math.ethz.ch/fim/conferences/19th-int-conf-random-structures-al… > > More information will be available soon. > > With best regards, > The organizers > > © 2018 - RSA2019 >

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