On April 19, 2023, Professor Anne Moreau visited Department of Mathematics and held lecture as part of Colloquium "Sibe Mardešić" of the Department of Mathematics, titled: "Quasi-lisse vertex algebras ". Anne Moreau is a full professor at the Laboratoire de Mathématiques d’Orsay and a scientific director of the Jacques Hadamard Library in Orsay (Paris-Saclay University). Her scientific expertise consists of several diverse topics, including representation theory, vertex algebras and algebraic geometry. She gave numerous courses on those topics, organized a few workshops, supervised several doctoral students, while currently she is preparing a book “Arc spaces and vertex algebras” with Tomoyuki Arakawa. She also manages or serves in editorial boards of several prestigious journals, such as “Algebras and Representation theory”, “Collection Panaromas et Synthèses de la SMF”, and “Publications Mathématiques de Besançon”. More info on the guests and lectures is available on Colloquium official web site.