CUNYRT: 9/11/2020: Miodrag Iovanov (Iowa)

From a channel Lumen includes in full: Every sampled upload is a recorded academic seminar talk in which a research mathematician explains results in representation theory, knot theory, vertex algebras or combinatorics, often starting from definitions and background. These are expert talks whose only aim is understanding, with descriptive titles and no entertainment, promotion or clickbait. They are edited seminar recordings rather than chat streams, so the whole channel qualifies.