Learn the fundamental concepts of spectral theory in this comprehensive lecture delivered by Laurent Bruneau and Vojkan Jakšić at CY Advanced Studies. Explore the mathematical foundations and key principles that form the basis of spectral analysis, covering essential theoretical frameworks and their applications. Delve into the core concepts that will prepare you for advanced study in this important area of mathematical analysis. Gain insights from expert instructors during this intensive academic presentation that forms part of the Quantissima sur Oise's Thematic Month program at CY Cergy Paris Université.