(Update: the date of the seminar has been changed to 20/10/2022, from 13/10/2022) Hi, The next Mathematics Postgraduate Society(MaPS) Seminar will be held on Thursday 20/10/2022 at 5pm in AGR Carslaw 829. Our speaker is Tomas Lasic Latimer. Details of the talk are attached below. Pizza and drinks will be provided afterwards. Feel free to come along, listen to an interesting talk, have some pizza and socialize! Time & Date: 5pm, Thursday 20/10/2022 Location: AGR, Carslaw 829 Zoom link: https://uni-sydney.zoom.us/j/86225546531 Title: An Intro to Riemann-Hilbert Problems Abstract: The talk is aimed to be a brief introduction to Riemann-Hilbert Problems (RHPs) and their applications. First, I’ll talk about how differential equations can be reframed as RHPs and what’s gained from this. Then, I’ll talk about how RHPs can be used to describe orthogonal polynomials. Finally, I’ll discuss RHPs in the context of difference equations. If time permits, I’ll also talk about some of the complex analysis techniques used in RHP theory.