Random

random@lists.dm.unipi.it

39 participants
5319 discussions

Seminar announcement
by Marco Scarsini 16 Apr '21

16 Apr '21

Thursday, 22 April, 17:00 CEST *Amy Ward,* University of Chicago Behavior-Aware Queueing <http://mailsender.luiss.it/lists/lt.php?id=cRpQBwcLSAUECQdOVgFdBQs> Discussants: Dongyuan Zhan and Liron Ravner The paper can be found here <https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3633435>. This is the link to the Virtual Room <http://mailsender.luiss.it/lists/lt.php?id=cRpQAAYBSAUECQdOVgFdBQs>. If you want to receive the password to access the virtual room, please fill out this form <https://docs.google.com/forms/d/e/1FAIpQLSeDxM-M5ogG43elgjC-lNCp0BDhISiZHG0…> (If you filled out the form in the past, this is not necessary). The schedule of the upcoming seminars can be found here <https://economiaefinanza.luiss.it/en/seminari/seminari-2021>. ******************************************************* Marco Scarsini Dipartimento di Economia e Finanza Luiss Viale Romania 32 00197 Roma, ITALY URL: http://docenti.luiss.it/scarsini/

1 0

2 online seminars - Paolo Gibilisco (Roma Tor Vergata) and Cambyse Rouzé (TUM)
by Carbone Raffaella 15 Apr '21

15 Apr '21

Dear colleagues, it is our pleasure to invite you to the following online seminars (in two different days!) Speaker: *Paolo Gibilisco* (Roma Tor Vergata) Title: *Information Geometry: an invitation to the basic results of the subject and to some new perspectives* Time: Monday, *April 19*, 5PM (Italian time) Speaker: *Cambyses Rouzé *(Technische Universität München) Title: *Complete modified logarithmic Sobolev inequalities and quantum Gibbs samplers* Time: Tuesday, *April 20*, 5PM (Italian time) Abstracts follow: one below in this message and one attached. Zoom Link <https://us02web.zoom.us/j/89543157111?pwd=NnAyblhVNkppeERRRFd1VGYwTkMyUT09> (the same for both seminars - ID and passcode below if necessary) The seminars are a satellite activity of the PhD course "Introduction to coercive inequalities with applications in analysis and probability theory" (professor Boguslaw Zegarlinski - Imperial College, London) Following speaker will be: *Giuseppe Savaré* on *April 22*nd, 4PM A specific announcement will be sent in the next days. Best regards, Raffaella Carbone *Cambyse Rouzé - Title and abstract* Title: Complete modified logarithmic Sobolev inequalities and quantum Gibbs samplers Abstract: Since the seminal works of Dobrushin-Shlosman and Stroock-Zegarlinski, equilibrium and out-of-equilibrium properties of classical lattice spin systems are known to be closely related: given a potential, one can construct a Markov process, called Glauber dynamics, whose reversing state coincides with the Gibbs state for the given potential. For these dynamics, Holley and Stroock made the key observation that systems thermalizing in times scaling logarithmically in the system size, a property known as rapid mixing, satisfy exponential decay of correlations at equilibrium. The converse implication, namely that exponential decay of correlations implies rapid mixing, was investigated later on in a series of articles by Zegarlinski and Stroock, who proved the stronger condition of an exponential entropic decay of the dynamics towards the limiting Gibbs measure, also known as logarithmic Sobolev inequality. In this talk, we will prove an extension of the result of Zegarlinski and Stroock to the quantum setting. More precisely, we will show that, given the Gibbs state $\sigma$ of a 2-local commuting Hamiltonian and above a critical temperature, there exists a local quantum Markovian evolution converging to $\sigma$ which satisfies the quantum modified logarithmic Sobolev inequality (MLSI) with a constant that does not depend on the size of the lattice. As a first step towards this proof, we will also provide a proof of the existence of the MLSI for finite dimensional systems coupled to an arbitrarily large, noiseless environment (also known as the complete MLSI constant), a problem that was left open until now. This talk is based on the following papers: https://arxiv.org/abs/2009.11817 https://arxiv.org/abs/2102.04146 -------- Dottorato Matematica is inviting you to a scheduled Zoom meeting. Topic: Seminars April 19 to 22 Time: Apr 19, 2021 05:00 PM Rome Apr 20, 2021 05:00 PM Apr 22, 2021 04:00 PM Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://us02web.zoom.us/meeting/tZ0oc-qpqzwrG9W8L60lAyfp8kbqksDUWlwv/ics?ic… Join Zoom Meeting https://us02web.zoom.us/j/89543157111?pwd=NnAyblhVNkppeERRRFd1VGYwTkMyUT09 Meeting ID: 895 4315 7111 Passcode: 029655 One tap mobile +13017158592,,89543157111# US (Washington DC) +13126266799,,89543157111# US (Chicago) Dial by your location +1 301 715 8592 US (Washington DC) +1 312 626 6799 US (Chicago) +1 646 876 9923 US (New York) +1 346 248 7799 US (Houston) +1 408 638 0968 US (San Jose) +1 669 900 6833 US (San Jose) +1 253 215 8782 US (Tacoma) Meeting ID: 895 4315 7111 Find your local number: https://us02web.zoom.us/u/kd3YVb722z -- Raffaella Carbone, PhD Probabilità e Statistica Matematica Dipartimento di Matematica dell'Università degli Studi di Pavia

1 0

post-doc positions call for interest
by Giovanni Sebastiani 15 Apr '21

15 Apr '21

The Istituto per le Applicazioni del Calcolo "Mauro Picone" belonging to the National Research Council of Italy seeks expressions of interest for two post-doc positions of three years starting in September 2021. The post-docs will be involved full time in the interdisciplinary EU research project "WARIFA". The WARIFA primary goal is to define a general personalised early risk assessment tool that will be used to support individual preventive measures for noncommunicable diseases, such as cardiovascular diseases, cancer, chronic respiratory diseases and diabetes, the leading causes of death in the world. This system will be accessible for individual citizens and patients on their smartphone via the WARIFA app. The WARIFA project represents expertise within AI technology, applied mathematics, statistics, medicine, sociology. We are looking for candidates with strong research expertise in applied probability and statistics, especially in mathematical foundations of machine learning, causal inference and bayesian belief networks, and advanced stochastic simulation techniques. There are no teaching duties. The positions will be formally advertised during the next months. In the meantime, those interested can send a mail to g.sebastiani(a)iac.cnr.it -- ________________________________________________________ Le informazioni contenute in questo messaggio di posta elettronica sono strettamente riservate e indirizzate esclusivamente al destinatario. Si prega di non leggere, fare copia, inoltrare a terzi o conservare tale messaggio se non si è il legittimo destinatario dello stesso. Qualora tale messaggio sia stato ricevuto per errore, si prega di restituirlo al mittente e di cancellarlo permanentemente dal proprio computer. The information contained in this e mail message is strictly confidential and intended for the use of the addressee only. If you are not the intended recipient, please do not read, copy, forward or store it on your computer. If you have received the message in error, please forward it back to the sender and delete it permanently from your computer system.

1 0

selezione pubblica per RTD-B, S.S.D. SECS-S/06 - Università degli Studi di Salerno
by Antonio DI CRESCENZO 14 Apr '21

14 Apr '21

Invio segnalazione di una procedura di selezione pubblica presso l'Università degli Studi di Salerno per il reclutamento di n. 1 ricercatore a tempo determinato, mediante stipula di contratti di lavoro subordinato di durata triennale, con regime di impegno a tempo pieno, ai sensi dell’art. 24, comma 3, lettera b) Legge 30 dicembre 2010 n. 240, presso il DIPARTIMENTO DI SCIENZE ECONOMICHE E STATISTICHE Codice concorso BRIC/PS/138 Settore concorsuale: 13/D4 - Metodi matematici dell'economia e delle scienze attuariali e finanziarie Profilo richiesto: SECS-S/06 - Metodi matematici dell'economia e delle scienze attuariali e finanziarie per il bando di concorso: https://web.unisa.it/amministrazione-trasparente/albo?file=files/003439673-…

1 0

Fwd: [owps] One World Probability Seminar Thursday April 15, 2021
by Faggionato, Alessandra 14 Apr '21

14 Apr '21

Buongiorno vi inoltro l'annuncio del OWPS di domani (i moderatori sono cambiati). Saluti Alessandra ---------- Forwarded message --------- Da: Nina Gantert <nina.gantert(a)tum.de> Date: mer 14 apr 2021 alle ore 15:48 Subject: [owps] One World Probability Seminar Thursday April 15, 2021 To: <owps(a)lists.bath.ac.uk> Dear All, Tomorrow's speakers in the One World Probability Seminar are Peter Mörters and Markus Heydenreich. (Note: all times are in UTC. Due to time changes, you should check what that translates to in your location) ------------------------------------------------ (14:00-15:00 UTC) Speaker: Peter Mörters Percolation phase transition in random connection models I: Subcritical phase in weight-dependent models We investigate spatial random graphs defined on the points of a Poisson process in d-dimensional space, which combine scale-free degree distributions and long-range effects. Every Poisson point is assigned an independent weight. Given the weight and position of the points, we form an edge between any pair of points independently with a probability depending on the two weights of the points and their distance. Preference is given to short edges and connections to vertices with large weights. We characterize the parameter regime where there is a nontrivial percolation phase transition and show that it depends not only on the power-law exponent of the degree distribution but also on a geometric model parameter. Based on joint work with Peter Gracar and Lukas Luechtrath. (15:00-16:00 UTC) Speaker: Markus Heydenreich Percolation phase transition in random connection models II: Critical behaviour for weight-independent models We study the random connection model (without weights) in a regime where a percolation phase transition occurs: for low edge density there are finite connected components only, while for large density there is an infinite component a.s. Our interest is on the transition between the low- and high-density regime. We prove an infrared bound for the critical connection function if the dimension is sufficiently large or if the pair connectivity has sufficiently slow decay; this allows a detailed description of this transition. To this end, we devise the lace expansion for Poisson processes. Based on joint work with Remco van der Hofstad, Günter Last, and Kilian Matzke. The zoom link will appear the day before on the OWPS website: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.owpro… It can also be directly accessed through the link below: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftum-conf.… Meeting-ID: 656 4176 8006 Kenncode: 161076 Best wishes, Julien and Nina -- ************************************************* 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 *************************************************

1 0

LTI@Unito/CCA webinar in QuantitativeFinance: “What matters in a characteristic?”, Hugues Langlois (HEC Paris) | April 20, 2021 @12:00
by Luca Regis 14 Apr '21

14 Apr '21

Dear Colleagues, I am happy to share with you the following invitation to the Quantative Finance webinar organized by LTI@UniTO and Collegio Carlo Alberto, “What matters in a characteristic?” by Hugues Langlois (HEC Paris), which will take place on Zoom on April 20, at 12.00. Below you find the Zoom link and an abstract of the presentation. Best regards, Luca Regis <#> <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/KjYRmqlKjrwhqhAdI2gLilGDSZjf_N3e7h…> <#> LTI@Unito and Fondazione Collegio Carlo Alberto are pleased to invite you to the next webinar <#> *April 20, 2021 | 12:00 - 13:15* *“What matters in a characteristic?”* * Hugues Langlois (HEC Paris)* <#> *Abstract*. We decompose firm characteristics into country, industry, and adjusted components and investigate their respective role in explaining expected returns and comovements in individual international stock returns. Models with adjusted components describe expected returns and comovements of individual stock returns better than models with unadjusted characteristics. While exposures to systematic risk factors are primarily explained by country components, alphas are predominantly driven by adjusted components. In contrast to the U.S. stock market, alphas in emerging and other developed markets are larger and significant. These rich empirical patterns inform models of stocks’ expected returns and comovements. *Zoom link* https://us02web.zoom.us/j/88521626111?pwd=cEdjUmdINERxZ3VzKzZuaXN5ZjEyZz09 <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/K-LOg1rFfgAp1Vis_nPzZABCDin-nMwdWK…> Meeting ID: 885 2162 6111 Passcode: 044353 <#> <#> <#> <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/G3qixTm9-N1P6dg7PFv3AK8C7TVOCc-7Yp…> <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/jtHbMvSIZkL41agMTsAl7rz6CCttgjbC7h…> <#> FONDAZIONE COLLEGIO CARLO ALBERTO Piazza Arbarello 8 - 10122 Torino, Italy phone: +390116705000 segreteria(a)carloalberto.org - www.carloalberto.org Facebook <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/zsLCc65Y9FomNLxNOcBSZGMOP7owve5tNm…> Twitter <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/5YX2pmxa-oc0WA3-iUV5-ciorC7wUYUyd2…> LinkedIn <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/WiJwT1Nk93TEFOV9ZwOihDt72sZCKlKyql…> Instagram <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/NaZEbS89ljbfvlcZWai2J42HH6phhDKVe8…> Youtube <https://4z5y5.r.a.d.sendibm1.com/mk/cl/f/ooK-g3SzwKowF2BfH3OuFQOAb1i_2ZONOT…> <#> *INFORMATION UNDER THE NEW GENERAL DATA PROTECTION REGULATION (GDPR)* Your personal information has been gathered for the exclusive purpose of informing you about the Collegio's initiatives, considering our and your legitimate interest or your consent. If you wish to have your personal data modified please contact Fondazione Collegio Carlo Alberto, piazza Arbarello 8, 1022 Torino, Italy - phone: +390116705000 - privacy(a)carloalberto.org *Unsubscribe* <https://4z5y5.r.a.d.sendibm1.com/mk/un/h2xCOW1uQ5i049PnKeo8VzMEWlTHSIzGmVY1…> <#> © 2021 Fondazione Collegio Carlo Alberto

1 0

notizia di Workshop
by Antonio DI CRESCENZO 14 Apr '21

14 Apr '21

Gent.mi, inoltro la notizia di un Workshop indirizzato verso "Probabilistic Methods for Time Series Data Management". Cordiali saluti, Antonio Di Crescenzo ----- I would like to point out the Workshop "ProTime2021" at the conference 'Data Base and Expert System Applications' (DEXA2021) - the scope is Probabilistic Methods for Time Series Data Management: http://www.dexa.org/protime2021 <https://www.researchgate.net/deref/http%3A%2F%2Fwww.dexa.org%2Fprotime2021> It happens for the first time, and we are curious about the amount of interest - also, the deadline is already the 23ed of April. However, this can be talked about. Please, if you know about interested people especially from the probability community, it would be of great value to the Workshop to have such contributions. It is a particularly good opportunity to publish probabilistic methods in the machine learning context. Thanks for spreading the news - it would be great to have participants from your community! With the best regards, Florian Sobieczky

1 0

Reminder: online seminar - Angelo Lucia (Caltech)
by Carbone Raffaella 13 Apr '21

13 Apr '21

Dear colleagues, it is our pleasure to invite you to the following seminar Speaker: *Angelo Lucia *(Caltech - Division of Physics, Mathematics and Astronomy) Title: *Mixing time of quantum Gibbs samplers* Time: Wednesday, *April 14*, 5PM (Italian time) The abstract follows below in this message. Zoom Link for the seminar <https://us02web.zoom.us/j/86771523774?pwd=SitEVEhPSGRlaEkxTHZmQk9rTmlLZz09> The seminar is a satellite activity of the PhD course "Introduction to coercive inequalities with applications in analysis and probability theory" (professor Boguslaw Zegarlinski - Imperial College, London) Best regards, Raffaella Carbone Abstract. Gibbs samplers are Markovian semigroups whose evolution converges towards the termal equilibrium of a given Hamiltonian (the Gibbs state). The time that the evolution takes, in the worst case, to converge close to the thermal state is known as the mixing time. Knowing the mixing time of a process is useful for many applications, and it can be estimated with various functional inequalities. In the case of classical spin systems on a lattice, it was shown that it is possible to determine the mixing properties of the semigroup from some "static" clustering condition of the thermal state. This suggests the question of whether the same is true for quantum spin systems. In this talk, I will focus on the specific case of Gibbs states of commuting Hamiltonians, and present some recent result in this direction. I will introduce the notion of quantum conditional relative entropy and show how it can be used to prove quasi-factorization (or approximate tensorization) properties of the quantum relative entropy. I will then show how these can be used to bound log-Sobolev constants for product semigroups with heath-bath generators, and under stronger assumptions in more general situations. -- Raffaella Carbone, PhD Probabilità e Statistica Matematica Dipartimento di Matematica dell'Università degli Studi di Pavia

1 0

In ricordo di Luigi M. Ricciardi
by Luigia Caputo 13 Apr '21

13 Apr '21

Cari colleghi, venerdì 16 Aprile, dalle ore 16:00 alle ore 16:30, in occasione dell'adunanza dell'Accademia di Scienze Fisiche e Matematiche, il Prof. Antonio Di Crescenzo, dell'Università degli Studi di Salerno, terrà una conversazione in ricordo di Luigi M. Ricciardi, a dieci anni dalla sua scomparsa. La conversazione avrà luogo in modalità telematica sulla piattaforma Microsoft Teams. Gli interessati sono calorosamente invitati a partecipare, accedendo al seguente link: https://teams.microsoft.com/dl/launcher/launcher.html?url=%2F_%23%2Fl%2Fmee… Cordiali saluti, Luigia Caputo -- Luigia Caputo Dipartimento di Matematica e Applicazioni Scuola Politecnica e delle Scienze di Base Universita' di Napoli FEDERICO II Via Cintia, Monte S.Angelo, 80126, NAPOLI, ITALY Tel. 081-675671 https://www.docenti.unina.it/luigia.caputo

1 0

PhD call
by Irene Crimaldi 12 Apr '21

12 Apr '21

Dear all, I am writing you because my university, IMT School for Advanced Studies Lucca (*www.imtlucca.it <https://www.imtlucca.it/en>*) is currently recruiting PhD students for the 2021/22 Programs. It is truly an excellent opportunity highly motivated candidates: the Programs are fully-financed (no tuition fees), all students receive up to four years of scholarships (15.300€/year) plus free room and board on-campus. I have attached some additional information and a flyer that contains the main details of the call. The call for applications ends on June 30th 2021 - 12.00 pm CEST – the application is entirely online (*https://www.imtlucca.it/en/phd/information-for-students <https://www.imtlucca.it/en/phd/information-for-students>*). I would be so grateful if you could pass this one to whom you think might be interested. All the best, Irene

1 0

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

Random