# Sigrid Källblad Nordin: Mathematical Finance and Measure-valued Martingales

**Time: **
Tue 2019-10-08 15.15 - 16.15

**Location: **
F11, KTH

**Participating: **
Sigrid Källblad Nordin, KTH

### Abstract

In this talk we focus on problems arising in robust mathematical finance; that is, problems resulting from pricing and hedging when acknowledging model uncertainty. We first provide the background and motivation for our key problems of study; particular emphasis will be placed on illustrating their link to optimal Skorokhod embedding problems and martingale optimal transport. We then show how a class of such constrained problems can be reformulated as optimisation problems over measure-valued martingales; the novelty of this reformulation is that it allows the problem to be treated via dynamic programming arguments. We provide some new results on the corresponding stochastic control theory.