Conference Name：  FudanWarwick Spring School on Financial Mathematics and Stochastic Analysis（15 April  30 April 2019） 

Organizations：  Ying Hu; Gechun Liang; Shanjian Tang; Jing Zhang; Qi Zhang 
Host：  复旦大学数学科学学院 
Venue：  复旦大学 
Opening Time：  2019年04月15日 
Closing Time：  2019年04月30日 
Abstract：  Course 1: Simulation of Levy processes Speaker：Aleksandar Mijatovic,University of Warwick Time and Place: 04.15 Monday 13:3016:00 HGX304 04.16 Tuesday 13:3016:00 Guanghua Main Building 1501 04.18 Thursday 9:0011:30 Guanghua Main Building 1501 04.19 Friday 13:3016:00 H2112A Abstract: These lectures describe a novel Monte Carlo algorithm for the simulation from the joint law of the position, the running supremum and the time of the supremum of a general Levy process at an arbitrary finite time. We will show that the bias decays geometrically, in contrast to the power law for the random walk approximation (RWA). We will identify the law of the error and, inspired by the recent work of Ivanovs \cite{MR3784492} on RWA, characterise its asymptotic behaviour. We will establish a central limit theorem, construct nonasymptotic and asymptotic confidence intervals and prove that the multilevel Monte Carlo (MLMC) estimator has optimal computational complexity (i.e. of order $\epsilon^{2}$ if the $L^2$norm of the error is at most $\epsilon$) for locally Lipschitz and barriertype functionals of the triplet. If the increments of the L\'{e}vy process cannot be sampled directly, we will combine our algorithm with the AsmussenRosi\'nski approximation by choosing the rate of decay of the cutoff level for small jumps so that the corresponding MC and MLMC estimators have minimal computational complexity. We will also describe an unbiased version of our estimator using ideas from Rhee and Glynn. New research directions based on this algorithm will be discussed.
Course 2: Skorokhod embeddings Speaker：David Hobson, University of Warwick Time and Place: 04.22 Monday 9:0011:30 Guanghua Main Building 1501 04.22 Monday 13:3016:00 HGX304 04.23 Tuesday 9:0011:30 Guanghua Main Building 1501 04.23 Tuesday 13:3016:00 Guanghua Main Building 1501 Abstract: Let $X= (X_t)_{t \geq 0}$ be a stochastic process on a state space $E$ and let $\mu$ be a measure on $E$. The Skorokhod embedding problem (SEP) is to construct a stopping time (where possible) such that the law of $X_\tau$ is $\mu$. The classical case is when $X$ is Brownian motion, null at zero, $E$ is the real numbers and $\mu$ is a centred, square integrable probability measure. In this set of talks we will discuss some classical solutions to the SEP and extensions to other processes, other classes of target laws, and processes with nontrivial starting law. In addition we will discuss applications including applications to mathematical finance.
Course 3: Martingale optimal transport with applications in finance Speaker: Dominykas Norgilas, University of Warwick Time and Place: 04.24 Wednesday 8:0010:10 Guanghua Main Building 1801 04.25 Thursday 8:0010:10 Guanghua Main Building 1501 04.26 Friday 13:3016:00 Guanghua Main Building 1801 04.29 Monday 9:0011:30 Guanghua Main Building 1501 Abstract: The theory of optimal transport has already proved to be very successful to solve many important economic issues. Recent progresses were motivated by applications to problems in mathematical finance. In this course we focus on the pricing and hedging of exotic options under model uncertainty, given the prices of vanilla options. Our approach is based on the martingale version of the MongeKantorovich mass transport. We will discuss the relevant mathematical tools, key results and few important examples.
Course 4: Risk measures and regulatory arbitrage Speaker: Martin Herdegen, University of Warwick Time and Place: 04.25 Thursday 10:2012:30 Guanghua Main Building 1501 04.26 Friday 9:0011:30 Guanghua Main Building 1801 04.29 Monday 13:3016:00 HGX304 04.30 Tuesday 13:3016:00 Guanghua Main Building 1501 Abstract: In this short course, we first provide a selfcontained introduction to convex risk measures and their duality theory. In a second part, we look at the concept of regulatory arbitrage and study in particular the possibility of regulatory arbitrage under expected shortfall.

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