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12/2Logic Colloquium: Walter Dean (Warwick)
Logic Colloquium: Walter Dean (Warwick)
Friday, December 2nd, 2022
11:15 AM  12:25 PM
Storrs Campus
ZoomJoin us in the Logic Colloquium for a talk by Walter Dean (Warwick, UK):
"On the reverse philosophy of the sorites paradox"
Abstract: The goal of this talk is to use the sorites paradox to illustrate the methodology of "reverse philosophy"  i.e. the application of methods from reverse mathematics to study the mathematical involvement of recognized arguments in analytic philosophy. After briefly motivating such a program, I will focus on the following: 1) the role of measurement and representation theorems in the linguistic formulation of various forms of the sorites; 2) the role of a weak form of Hölder's Theorem in the formulation of the conditional sorites for predicates such as "tall"; 3) the role of a stronger form of Hölder's Theorem in the formulation of the socalled continuous sorites for predicates such as "red" of Weber & Colyvan 2010/Weber 2021. Contrasts will be drawn between the constructivity of the weaker form (as observed by Krantz 1968 and formalized in RCA_0 by Solomon 1998) and the nonconstructivity of the latter form (due to its apparent dependence on Arithmetical Comprehension).
All welcome!
https://logic.uconn.edu/calendar/
Contact Information: logic@uconn.edu More

12/2SIGMA Seminar
On Rigorous Numerical Approximations of Transfer Operators
Erik Wendt (UConn)SIGMA Seminar
Friday, December 2nd, 2022
On Rigorous Numerical Approximations of Transfer Operators
Erik Wendt (UConn)
12:20 PM  01:10 PM
Storrs Campus
MONT 214Transfer operators describe the evolution of maps under the iteration of dynamical systems. This has widereaching applications to many fields of mathematics, such as dimension theory. In this talk we show that by combining the theory of transfer operators with approximation schemes generated from finite element methods, one can obtain rigorous numerical estimates on the Hausdorff Dimension of conformal fractals.
Contact Information: rachel.bailey@uconn.edu More

12/2UConn SIAM Student Chapter
Women in Mathematics and Applications
TitleUConn SIAM Student Chapter
Friday, December 2nd, 2022
Women in Mathematics and Applications
Title
02:30 PM  03:30 PM
Storrs Campus
MONT 225TBA
Contact Information: Bin Zou, bin.zou@uconn.edu More

12/5Actuarial Science Seminar
Valuation and Risk Management of Guaranteed Minimum Death Benefits by Randomization
Peter Hieber (Lausanne)Actuarial Science Seminar
Monday, December 5th, 2022
Valuation and Risk Management of Guaranteed Minimum Death Benefits by Randomization
Peter Hieber (Lausanne)
11:00 AM  12:00 PM
Storrs Campus
OnlineWebex meeting link: https://uconncmr.webex.com/uconncmr/j.php?MTID=m167c9bc4fa0c94f68687df60026cf0a7
(meeting number: 2623 910 4604 password: fZJdMeCE533)
Abstract: Randomization is a technique in Finance to replace known quantities (like the time to maturity) by random variables. This sometimes gives moments or quantiles of the payoff in closedform, avoiding any kind of Fourier inversion or simulation algorithm. We apply this idea to GMDBs where payoff dates are per se random. The remaining lifetime is expanded in terms of a Laguerre series while the financial market follows a regime switching model with twosided phasetype jumps. For Europeantype GMDBs we obtain the density of the payoff in closed form as a Laurent series. Payoffs of pathdependent guarantee features can be expressed in terms of solutions of Sylvester equations (=matrix equations of the form AX + XB =C). The advantage of this approach is that prices or higherorder moments of many products can be obtained efficiently in quasi closedform. This is joint work with Griselda Deelstra (Université Libre de Bruxelles).
A paper version is available here: Deelstra, Griselda and Hieber, Peter, Randomization and the Valuation of Guaranteed Minimum Death Benefits, https://ssrn.com/abstract=4115505.
Speaker's short bio: Peter is an assistant professor in Actuarial Science at HEC Lausanne. Prior to this, he was a DAADPrime Fellow at the University of Ulm (Germany) and the Université Catholique de Louvain (Belgium) and a professor in "Risk and Insurance" at the Technical University of Munich. His research interests are in Insurance Mathematics and Actuarial Science with a focus on Life and Pension Insurance. Please visit his website for more information: https://sites.google.com/view/peterhieber/
Contact Information: Bin Zou, bin.zou@uconn.edu More

12/5PDE and Differential Geometry Seminar
Potential Theory in Conformal Geometry
Jie Qing (University of California, Santa Cruz)PDE and Differential Geometry Seminar
Monday, December 5th, 2022
Potential Theory in Conformal Geometry
Jie Qing (University of California, Santa Cruz)
02:30 PM  03:30 PM
Storrs Campus
onlineAbstract: In this talk we would like to report my recent joint work with Shiguang Ma on the application of the potential theory in conformal geometry. We will mention many interesting equations in conformal geometry and the potential theoretic approach to study them. In particular, we present the recent work on the extensions of Huber type theorem in higher dimensions under integral conditions of various curvature. We will demonstrate main ideas via the outlines of a proof of Huber Theorem.
https://www.math.ucsc.edu/people/faculty.php?uid=qing
Contact Information: dong@uconn.edu More

12/7Algebra Seminar
Singularities of irreducible theta divisors
Victor Lozovanu (University of Genova)Algebra Seminar
Wednesday, December 7th, 2022
Singularities of irreducible theta divisors
Victor Lozovanu (University of Genova)
11:15 AM  12:05 PM
Storrs Campus
Monteith 313The question of studying the singularities of theta divisors has attracted a lot of interest both old and new. Its importance is amplified when connecting it to the problem
of describing interesting loci on the moduli space of abelian varieites. The main goal of this talk is to introduce a folklore conjecture about the behaviour of the multiplicity at a point for irreducible theta divisors and explain some new results in this direction.
Contact Information: mihai.fulger@uconn.edu More

12/8Mathematics Colloquium
Title TBA
Hubert Lacoin (Institudo Nacional de Matemática Pura e Aplicada)Mathematics Colloquium
Thursday, December 8th, 2022
Title TBA
Hubert Lacoin (Institudo Nacional de Matemática Pura e Aplicada)
03:30 PM  04:30 PM
Storrs Campus
OnlineTBA
Contact Information: KyuHwan Lee More

12/9SIGMA Seminar
Space of Orders with Finite CantorBendixson Rank
Waseet Kazmi (UConn)SIGMA Seminar
Friday, December 9th, 2022
Space of Orders with Finite CantorBendixson Rank
Waseet Kazmi (UConn)
12:20 PM  01:10 PM
Storrs Campus
MONT 214For an orderable group, it is a wellknown fact that its space of orders forms a topological space, in fact, a Boolean space (i.e. compact, Hausdorff and totally disconnected). It is still an open question whether the converse of this is true, that is, what Boolean spaces can be realized as the space of orders of some orderable group? We present a result that gives some progress towards trying to answer this larger open question. We show the existence of orderable groups such that their space of orders has arbitrary finite CantorBendixson rank.
Contact Information: rachel.bailey@uconn.edu More

12/16UConn SIAM Student Chapter
Women in Mathematics and Applications
TitleUConn SIAM Student Chapter
Friday, December 16th, 2022
Women in Mathematics and Applications
Title
02:30 PM  03:30 PM
Storrs Campus
MONT 225TBA
Contact Information: Bin Zou, bin.zou@uconn.edu More