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Seminario Valeria Bignozzi
by Gabriele Stabile 03 Dec '15

03 Dec '15

Mercoledì 9 Dicembre, alle ore 13, presso l'Aula Fanfani al 5° piano del Dipartimento MEMOTEF (Sapienza Università di Roma, Via del Castro Laurenziano 9, Roma), si terrà il seminario: "How superaddittive can a risk measure be?" Speaker: Velaria Bignozzi (Sapienza University of Rome). ABSTRACT ************** Risk measures that are not subadditive may penalize the aggregation of risk, by inducing portfolio requirements that are larger than those of undiversified positions. This happens for instance for Value-at-Risk (VaR), as well as convex shortfall risk measures. In this paper we characterize the potential for superadditivity that any risk measure may exhibit, considering both dependence uncertainty as well as the effect of portfolio size. It is shown that for the wide majority of risk measures of use or interest this corresponds to calculating the smallest dominating coherent risk measure (SDCRM). We show that this risk measure often exists and is identified with the notion of extreme-aggregation risk measure introduced in this paper. Explicit results are provided for the class of distortion risk measures, where the SDCRM is again a distortion risk measure and for the class of shortfall risk measures, where the SDCRM is given by an expectile. Tutti gli interessati sono invitati a partecipare. Cordiali saluti, Gabriele Stabile

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Fwd: Saint-Flour 2016
by Marco Romito 02 Dec '15

02 Dec '15

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Seminario di Probabilita' - Universita' di Padova
by alessandra bianchi 01 Dec '15

01 Dec '15

Ho il piacere di invitarvi al seguente seminario, che si terrà giovedì 10 dicembre, alle 11:30, in Aula 2BC30 della Torre Archimede presso il Dipartimento di Matematica dell'Università degli Studi di Padova. SPEAKER: Sander Dommers AFFILIATION: Ruhr University Bochum TITLE: Metastability in the reversible inclusion process ABSTRACT: In the reversible inclusion process with N particles on a finite graph, each particle at a site x jumps to site y at rate (d+n_y) r(x,y), where d is a diffusion parameter, n_y is the number of particles on site y and r(x,y) is the jump rate from x to y of an underlying reversible random walk. When the diffusion d converges to 0 as N goes to infinity, the particles cluster together to form a condensate. It turns out that these condensates only form on the sites where the underlying random walk spends the most time. Once such a condensate is formed the particles stick together and the condensate performs a random walk itself on much longer timescales, which can be seen as metastable behavior. We study the rates at which the condensate jumps and show that in the reversible case there are several time scales on which these jumps occur depending on how far (in graph distance) the sites are from each other. This generalizes work by Grosskinsky, Redig and Vafayi who study the symmetric case where only one timescale is present. Our analysis is based on the martingale approach by Beltrán and Landim. This is work in progress jointly with Alessandra Bianchi and Cristian Giardinà. -- Alessandra Bianchi Dip. di Matematica Università di Padova Via Trieste, 63 - 35121 Padova, Italy phone: +39 049 827 14 06 fax: +39 049 827 14 28 e-mail: bianchi(a)math.unipd.it http://www.math.unipd.it/~bianchi/

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internship position "An analysis of the firebrand landing distributions" at BCAM, Bilbao
by Gianni Pagnini 01 Dec '15

01 Dec '15

Dear all, an internship position is open at BCAM www.bcamath.org [1], Bilbao, Basque Country - Spain, on the topic "AN ANALYSIS OF THE FIREBRAND LANDING DISTRIBUTIONS" related to a ongoing research on modelling wildland fire propagation. The deadline for application submission is the 20th of January, 2016. http://www.bcamath.org/en/research/internships [2] http://www.bcamath.org/documentos_public/archivos/internships/SP_FirebrandL… [3] For information you can contact Inderpreet kaur: ikaur(a)bcamath.org. Sincerely, Gianni Pagnini -- Gianni Pagnini Ikerbasque Research Fellow BCAM - Basque Center for Applied Mathematics Alameda de Mazarredo, 14 E-48009 Bilbao, Basque Country - Spain Tel. +34 946 567 842 gpagnini(a)bcamath.org | www.bcamath.org/gpagnini [4] _ _ _(__ __matematika mugaz bestalde )_ Links: ------ [1] http://www.bcamath.org [2] http://www.bcamath.org/en/research/internships [3] http://www.bcamath.org/documentos_public/archivos/internships/SP_FirebrandL… [4] http://www.bcamath.org/gpagnini

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postdoc position on "Stochastic Processes for Anomalous Diffusion" at BCAM, Bilbao
by Gianni Pagnini 01 Dec '15

01 Dec '15

Dear all, I would like inform you about a call for a 2-year postdoc position at BCAM - Basque Center for Applied Mathematics [1], Bilbao, Basque Country - Spain. The topic is "Stochastic Processes for Anomalous Diffusion" and the deadline for submission of applications the 30th of December, 2015. Here is the link http://www.bcamath.org/en/research/job/ic2015-winter-postdoctoral-fellowshi… [2] The applicant should select the research line SP-Statistical Physics. Please, share this announcement with any colleague and applicant that could be interested. Questions can be sent to me gpagnini(a)bcamath.org. Thank you very much. Regards, Gianni -- Gianni Pagnini Ikerbasque Research Fellow BCAM - Basque Center for Applied Mathematics Alameda de Mazarredo, 14 E-48009 Bilbao, Basque Country - Spain Tel. +34 946 567 842 gpagnini(a)bcamath.org | www.bcamath.org/gpagnini [3] _ _ _(__ __matematika mugaz bestalde )_ Links: ------ [1] http://www.bcamath.org/ [2] http://www.bcamath.org/en/research/job/ic2015-winter-postdoctoral-fellowshi… [3] http://www.bcamath.org/gpagnini

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4 new positions at Loughborough (fwd)
by Michele Gianfelice 30 Nov '15

30 Nov '15

---------- Forwarded message ---------- Date: Mon, 30 Nov 2015 12:38:03 +0000 From: Wael Bahsoun <W.Bahsoun(a)lboro.ac.uk> To: Wael Bahsoun <W.Bahsoun(a)lboro.ac.uk> Subject: 4 new positions at Loughborough Dear Colleagues, We are advertising for 4 new positions at Loughborough. I would greatly appreciate it if you pass the info below to suitable candidates, and encourage them to apply as soon as possible. The deadline is 17 December: 1. Lecturer in Stats https://vacancies.lboro.ac.uk/tlive_webrecruitment/wrd/run/ETREC107GF.open?… 2. Prof in Stats or in Applied Maths https://vacancies.lboro.ac.uk/tlive_webrecruitment/wrd/run/ETREC107GF.open?… 3. SL/Reader in Stats or in Applied Maths https://vacancies.lboro.ac.uk/tlive_webrecruitment/wrd/run/ETREC107GF.open?… 4. Lecturer in Maths (geometry, algebra or algebraic geometry) https://vacancies.lboro.ac.uk/tlive_webrecruitment/wrd/run/ETREC107GF.open?… Best wishes, Wael

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Lectureship in Financial Mathematics at DCU (fwd)
by Tiziano Vargiolu 30 Nov '15

30 Nov '15

---------- Forwarded message ---------- Date: Fri, 27 Nov 2015 15:33:26 +0000 From: Paolo Guasoni <paolo.guasoni(a)dcu.ie> To: undisclosed-recipients: ; Subject: Lectureship in Financial Mathematics at DCU Dear Colleague, Dublin City University has a Lecturer vacancy in Financial Mathematics: http://www4.dcu.ie/hr/vacancies/current.shtml Please draw this to the attention of potential candidates. The closing date for applications is January 3rd. All the best, Paolo Guasoni

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EFI call for papers
by Tiziano Vargiolu 27 Nov '15

27 Nov '15

Carissimi, stiamo organizzando un workshop intitolato Energy Finance Italia (EFI), prima edizione, per collegare la comunit? italiana che lavora su finanza ed economia dell'energia. Sul tema avevamo gia' organizzato in Italia il convegno Energy Finance 2014 (energyfinance2014.org) della serie europea Energy Finance. EFI sara' tenuto all'Universita' di Camerino (Camerino, MC), giovedi' 10 e venerdi' 11 dicembre pp.vv. Il tema e': tutto quanto di interessante si fa in energy finance ed economics, (dal pricing alla policy, dall'econometrics al disegno e alle simulazioni del mercato elettrico, dagli equilibri micro nei mercati dei carburanti, della CO2 e delle rinovabili al disegno di contratti derivati, dalle analisi con integrated assessment model del global warming all'ottimizzazione della gestione degli impianti idroelettrici), con gli scopi di: 1) riunirci come 'collezione di competenze' del settore, e di 2) creare una comunita' di riferimento italiana, da usare per integrare le proprie reti di contatti individuali, per proporre progetti per finanziamenti, come workshop italiano a cui mandare dottorandi e postdoc, eccetera, tutto questo, ovviamente, in Italia. Il sito del workshop e': http://energyfinanceitalia.dtdns.net/ Chi fosse interessato a partecipare e/o a contribuire con un talk, e' pregato di scrivere a carlo.lucheroni(a)unicam.it ENTRO VENERDI' 5 DICEMBRE. Grazie per l'attenzione, Carlo Lucheroni (Universit? di Camerino), Carlo Mari (Universit? di Chieti Pescara), Tiziano Vargiolu (Universit? di Padova). -------------------------------------------------------------------------- Tiziano Vargiolu Dipartimento di Matematica Phone: +39 049 8271383 Universita' di Padova Fax: +39 049 8271428 Via Trieste, 63 E-mail: vargiolu(a)math.unipd.it I-35121 Padova (Italy) WWW: http://www.math.unipd.it/~vargiolu --------------------------------------------------------------------------

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Annuncio di seminario (fwd)
by Tiziano Vargiolu 27 Nov '15

27 Nov '15

---------- Forwarded message ---------- Date: Fri, 27 Nov 2015 16:21:41 +0100 From: Pietro Rossi <pietro.rossi(a)prometeia.com> To: Tiziano Vargiolu <vargiolu(a)math.unipd.it> Subject: Annuncio di seminario Con il consueto invito di estenderlo a chiunque possa essere interessato Giovedi 3 Dicembre ore 14:30 Anna Maria Gambaro Dottoranda presso il dipartimento di statistica e metodi quantitativi (DISMEQ) dell'universit? di Milano Bicocca HJM multiple-curve model with time-changed L?vy processes Abstract:We propose a multiple-curve model, set in Heath-Jarrow-Morton framework, with time-changed L ?evy as driving processes. This class of process was introduced in finance by Carr and Wu (2004) for pricing of equity derivatives. However, recently, empirical studies, as Leippold and Str?mberg (2014), suggest the application of time-changed L ?evy process to interest rate financial products. In particular, L ?evy processes generate very flexible return innovation distribution and take into account potential discontinuities in Libor dynamics. On the other hand, the time change and the dependence between the L ?evy process and the random time introduce ?stochastic volatility? and ?stochastic skew? in the model, in order to reproduce the term structure of the volatility smile of caps and swaptions. This paper is inspired by the work of Eberlein and Raible (1999) on L ?evy models, generalized in Crepey et al. (2014) to a multiple curve setting. To the best of our knowledge, no previous works present a theoretically consistent no-arbitrage framework for pricing interest rate derivatives with time-changed L ?evy process. Moreover we apply these flexible processes to a multiple-curve post crisis set-up. First of all, we build a term structures for zero coupon bonds and Libor forward rate and we derive sufficient conditions to ensure the absence of arbitrage. Moreover the pricing of interest rate derivatives, as caps and swaptions, is developed using the Fourier transform method. Finally different choices for the construction of the driving process are examined and compared. Il seminario si terra' presso la sede di Prometeia a Bologna in Via Marconi 43. -- Disclaimer: http://www.prometeia.it/disclaimer

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Fwd: FW: postdoc position on "Stochastic Processes for Anomalous Diffusion" at BCAM
by Enrico Scalas 27 Nov '15

27 Nov '15

Car* collegh*, e' disponibile una posizione di postdoc per 2 anni al BCAM a Bilbao. Il tema e' "Stochastic Processes for Fractional Diffusion". La scadenza e' il 30 dicembre. Questi sono i link ufficiali http://www.bcamath.org/documentos_public/archivos/ofertas/BCAM15_Postdoc_Pr… http://www.bcamath.org/en/research/job/ic2015-winter-postdoctoral-fellowshi… Se avete domande o candidature potete rivolgervi a -- Gianni Pagnini Ikerbasque Research Fellow *BCAM - * Basque Center for Applied Mathematics Alameda de Mazarredo, 14 E-48009 Bilbao, Basque Country - Spain Tel. +34 946 567 842 gpagnini(a)bcamath.org | www.bcamath.org/gpagnini Cordiali saluti, Enrico Scalas

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