November 2023 - Random - Mailing list — Dipartimento di Matematica, UniPI

Concorso da RTDb di MAT/06 a Padova - scadenza 25/8/2016
by Marco Ferrante 25 Jun '24

25 Jun '24

Cari colleghi, vi segnalo che il Dipartimento di Matematica dell'Università di Padova ha bandito un posto di ricercatore di tipo B nel settore MAT/06. Il bando è disponibile alla pagina http://www.math.unipd.it/it/news/?id=1898 La scadenza per la presentazione delle domande è il 25 agosto 2016. Marco Ferrante

1 1

Seminar: Adriano Barra at Tor Vergata 02.11
by Michele Salvi 22 Mar '24

22 Mar '24

Dear all, On Thursday, November 2nd, at 15h00 in Aula Dal Passo of Tor Vergata Math Department, RoMaDS (https://www.mat.uniroma2.it/~rds/about.php) will host Adriano Barra (Università del Salento) with the seminar "A walk in the statistical mechanics of neural networks” Abstract: Purpose of this talk is twofold: in the first part, I will provide a statistical mechanical picture of shallow networks proving how learning in biological neural networks (e.g. in the Hopfield model) and standard machine learning via gradient descent (e.g. on the Boltzmann machine) ultimately convey the same information after training. This diminishes the gap in our understanding between biological and artificial information processing networks. In the second part of the talk, focusing on a toy model for the sake of simplicity, I will show how recent mathematical techniques, heavily based on Guerra's interpolation, are suitable to describe the emergent properties of this kind of networks. We encourage in-person partecipation. Should you be unable to come, here is the link to the Teams streaming: https://teams.microsoft.com/l/meetup-join/19%3arfsL73KX-fw86y1YnXq2nk5VnZFw… <https://teams.microsoft.com/l/meetup-join/19:rfsL73KX-fw86y1YnXq2nk5VnZFwPU…> The seminar is part of the Excellence Project MatMod@TOV.

1 1

Seminar: Marco Carfagnini at Tor Vergata 25.09
by Michele Salvi 08 Mar '24

08 Mar '24

Dear all, We are happy to announce that on Monday, September 25th, at 15h00 in Aula Dal Passo of Tor Vergata Math Department, RoMaDS (https://www.mat.uniroma2.it/~rds/about.php) will host Marco Carfagnini (University of California San Diego) with the seminar "Spectral gaps via small deviations” Abstract: In this talk we will discuss spectral gaps of second order differential operators and their connection to limit laws such as small deviations and Chung’s laws of the iterated logarithm. The main focus is on hypoelliptic diffusions such as the Kolmogorov diffusion and horizontal Brownian motions on Carnot groups. If time permits, we will discuss spectral properties and existence of spectral gaps on general Dirichlet metric measure spaces.This talk is based on joint works with Maria (Masha) Gordina and Alexander (Sasha) Teplyaev. We encourage in-person partecipation. Should you be unable to come, here is the link to the Teams streaming: https://teams.microsoft.com/l/meetup-join/19%3arfsL73KX-fw86y1YnXq2nk5VnZFw…"Tid"%3a"24c5be2a-d764-40c5-9975-82d08ae47d0e"%2c"Oid"%3a"650fc4a8-4cec-4bd2-87bc-90d134074fe6”} <https://teams.microsoft.com/l/meetup-join/19%3arfsL73KX-fw86y1YnXq2nk5VnZFw…> . The seminar is part of the Excellence Project MatMod@TOV.

1 5

Assegno di ricerca: Building resilience to emerging risks in financial and insurance markets
by Gabriele Stabile 30 Nov '23

30 Nov '23

Buongiorno. Si segnala che presso il Dipartimento di metodi e modelli per l'economia, il territorio e la finanza (Università Sapienza di Roma) è stato bandito un assegno di ricerca per il settore scientifico disciplinare SECS-S/06 dal titolo: "*Building resilience to emerging risks in financial and insurance markets* ", nell'ambito del progetto PRIN 2022 con stesso titolo. L'assegno ha durata pari a *12 mesi* e il bando scadrà il *29/12/2023* Il bando è reperibile al link seguente https://web.uniroma1.it/trasparenza/dettaglio_bando_albo/211431/2023-12-29T… Gabriele Stabile

1 0

Fwd: Postdoc position in Lyon in probability / mathematical physics (2024-2026)
by Faggionato, Alessandra 29 Nov '23

29 Nov '23

Ricevo e con piacere inoltro Saluti Alessandra ---------- Forwarded message --------- Da: Christophe Garban <christophe.garban(a)gmail.com> Date: mer 29 nov 2023, 09:29 Dear colleagues, I am currently advertising a two-year postdoc position (with a possible extension to a third year) in probability/mathematical physics in University of Lyon 1, deadline January, 18th. Please transfer the announcement below to potential candidates. Thanks a lot! Best wishes, Christophe. ---------------------- Postdoc position in Lyon for 2024 Université Lyon 1 (funded by the ERC project Vortex) Applications are invited for one (possibly two) postdoctoral fellowship in probability/mathematical physics at University Lyon 1. The postdoc is funded by the European Research Council grant Vortex. Main research areas include: Villain and XY model, Coulomb gas, Berezinskii-Kosterlitz-Thouless transition, lattice gauge theory, Gaussian Free Field, Ising and dimer models, percolation, localisation and delocalisation of interfaces, classical Heisenberg model, planar statistical physics. Practical information: (you may also click on this link : http://math.univ-lyon1.fr/~garban/Fichiers/PostdocLyon2024.pdf ) - The position is for two years (with a possible extension to a third year), with a salary of approx. 38000 per year (between year 0 and 3 after PhD) and approx. 50000 euros per year (between year 3 and 7 after PhD). - Substantial financial support to attend conferences, workshops and invite collaborators will be granted. (Approx 5000 euros/year). - No teaching. - A lot of activity around probability in Lyon. - Great city :-) - The expected starting date is September 2024, but a different date may be arranged. Application and deadline: Applications including a CV, a list of publications and a (approximately) three-pages description of research interests should be sent by email to Christophe Garban (christophe.garban(a)gmail.com) before *January 18th, 2024.* Applicants should also arrange for up to three letters of recommendation to be sent to the same address. They will be evaluated first on January 19th, 2024 and then on a rolling basis. *Contacts: *(all members of the ERC project Vortex). Christophe Garban (christophe.garban(a)gmail.com) Diederik van Engelenburg (diederikvanengelenburg(a)gmail.com) Avelio Sepúlveda (lsepulveda(a)dim.uchile.cl) Jean-Marie Stéphan (stephan(a)math.univ-lyon1.fr)

1 0

Seminario di Daniel Parisi - 4 dicembre, Sapienza Università di Roma
by Giacomo Di Gesu 29 Nov '23

29 Nov '23

Buongiorno a tutti, segnalo il seguente seminario: *Lunedì 4 dicembre, ore 17:00* Sala di Consiglio, Dipartimento di Matematica, Sapienza Università di Roma *Speaker:* Daniel Parisi, Sapienza Università di Roma *Title:* Entropy and mixing time of non-local Markov chains. *Abstract:* We discuss the convergence to the stationary distribution for non-local Markov chains on general spin systems on arbitrary graphs. We show that the relative entropy functional of the corresponding Gibbs measure satisfies the block factorization of entropy, an inequality that controls the entropy on a given region V in terms of a weighted sum of the entropies on blocks A ⊂ V when each A is given an arbitrary nonnegative weight α_A. This inequality generalizes the approximate tensorization of entropy and provides a natural extension of the classical Shearer inequality satisfied by the Shannon entropy. As a consequence of block factorization, we obtain optimal bounds on the mixing time of a large class of sampling algorithms for the ferromagnetic Ising/Potts models, including non-local Markov chains such as the heat-bath block dynamics and the Swendsen-Wang dynamics. The methods also apply to spin systems with hard constraints such as q-colorings and the hard-core gas model. First, we consider spin systems on the d-dimensional lattice Z^d satisfying strong spatial mixing. Then we extend our analysis to spin systems on an arbitrary graph satisfying spectral independence. Finally, we show that the existence of a contractive coupling for any local Markov chain implies spectral independence. saluti, Giacomo Di Gesù

1 0

PhD position in Hamburg
by Michele Salvi 29 Nov '23

29 Nov '23

Ricevo ed inoltro: The Institute of Mathematics of Hamburg University of Technology invites applications for a PhD position in probability theory. The position is funded via the DFG Priority Programme 2265 Random Geometric Systems and the research topic will be on the intersection of limit theorems, Stein's method and stochastic geometry. The successful candidate is expected to have a Master's degree in Mathematics or a related field, a good background in probability theory and proficiency in written and spoken English. The position (75%, TV-L 13) is for three years. The starting date should be in spring or earlier summer 2024. Please apply by December 18, 2023 online via our application portal, where you can find more information: https://stellenportal.tuhh.de/hyuhw For questions please contact Prof. Dr. Matthias Schulte at matthias.schulte(a)tuhh.de <mailto:matthias.schulte@tuhh.de>.

1 0

Convegno in memoria di Giuseppe Da Prato
by Marco Romito 29 Nov '23

29 Nov '23

Giovedì 7 dicembre 2023, Sala Azzurra, Scuola Normale Superiore, Pisa /Una giornata scientifica in ricordo di Giuseppe Da Prato/ 9:30 saluti di Luigi Ambrosio 9:45 Mimmo Iannelli, "Ricordando Beppe, un maestro e un amico" Seguono eventuali brevi interventi liberi. 11:00 coffee break 11:30 Alessandra Lunardi, "Beppe Da Prato e 50 anni di equazioni di evoluzione" 12:30 pranzo 14:30 Lorenzo Zambotti, "Beppe Da Prato e 50 anni di SPDEs" 15:30 Chiusura di Piermarco Cannarsa ed eventuali brevi interventi. Il comitato organizzatore: Luigi Ambrosio Piermarco Cannarsa Gabriella Di Blasio Franco Flandoli Luciano Tubaro

1 0

One world probability seminar this Thursday
by Ilya Chevyrev 28 Nov '23

28 Nov '23

Dear all. The next session of the One World Probability Seminar will be this Thursday (November 30) from 14:00 to 16:00 *UTC time*.The speakers of this session are Vittoria Silvestri (University of Rome La Sapienza) and James Norris (University of Cambridge). Title, abstract and the zoom link are below the signature and can be also found on the website https://www.owprobability.org/one-world-probability-seminar. Kind regards, Ilya Chevyrev and Julio Backhoff. Title: Planar aggregation with subcritical fluctuations and the Hastings-Levitov models Abstract: The ALE (Aggregate Loewner Evolution) models describe growing random clusters on the complex plane, built by iterated composition of random conformal maps. A striking feature of these models is that they can be used to define natural off-lattice analogues of several fundamental discrete models, such as Eden growth or Diffusion Limited Aggregation, by tuning the correlation between the defining maps appropriately. In this talk I will introduce the ALE models, which include Hastings-Levitov models as particular cases, and discuss their large scale behaviour. Based on joint work with James Norris (Cambridge, UK) and Amanda Turner (Leeds, UK). Speaker 1 (14:00-15:00 UTC): Vittoria Silvestri (University of Rome La Sapienza). Title: Analysis of stochastic evolutions in infinite dimensions: application to stability of the Hastings-Levitov models Abstract: Martingales play a important role in the analysis of stochastic processes, in particular in demonstrating laws of large numbers and central limit behaviour. Motivated by the Aggregate Loewner Evolution models discussed in the preceding talk, I will discuss an interplay between martingale inequalities and Lp-multiplier estimates which allows to extend the use of martingales in an infinite-dimensional setting. (This is joint work with Vittoria Silvestri (Rome, La Sapienza) and Amanda Turner (Leeds).) Speaker 2 (15:00-16:00 UTC): James Norris (University of Cambridge). Zoom-link: https://univienna.zoom.us/j/69906409670?pwd=TUNNRFRsMUtSMHA0Y3k2eVhpdVpMQT09 Meeting ID: 699 0640 9670 Passcode: 081765

1 0

3-year Assistant Professorship in Mathematics, DCU
by Paolo Guasoni 28 Nov '23

28 Nov '23

Dear Colleagues, The School of Mathematical Sciences in Dublin City University is inviting applications for the post of Assistant Professor in Mathematics. This is a 3-year position, involving teaching and research. It is expected that the successful candidate will be in post by September 2024. Further details concerning the position may be found at https://www.dcu.ie/sites/default/files/inline-files/rc230616-advert-ap-scho… The application form for interested candidates is available to download at https://www.dcu.ie/hr/vacancies-current-vacancies-external-applicants with the closing date for applications being* Monday 8 January 2024*. Please bring this position to the attention of any interested candidates. With thanks and best wishes, John Appleby -- Professor John Appleby Head, School of Mathematical Sciences A: School of Mathematical Sciences Dublin City University Glasnevin Dublin 9 IRELAND T: +353 1 700 8232 T (secretary): +353 1 700 5293 E: John.Appleby(a)dcu.ie -- * *Séanadh Ríomhphoist/Email Disclaimer* *Tá an ríomhphost seo agus aon chomhad a sheoltar leis faoi rún agus is lena úsáid ag an seolaí agus sin amháin é. Is féidir tuilleadh a léamh anseo. <https://sites.google.com/view/seanadh-riomhphoist>* *This e-mail and any files transmitted with it are confidential and are intended solely for use by the addressee. Read more here. <https://sites.google.com/view/dcu-email-disclaimer>* * -- <https://www.facebook.com/DCU/> <https://twitter.com/DCU> <https://www.linkedin.com/company/dublin-city-university> <https://www.instagram.com/dublincityuniversity/?hl=en> <https://www.youtube.com/user/DublinCityUniversity>

1 0