Posted on May 12, 2021May 12, 2021 by DIMAGJohannes Carmesin gave an online talk on locally planar embeddability of graphs on a surface at the Virtual Discrete Math Colloquium On May 12, 2021, Johannes Carmesin from the University of Birmingham gave an online talk at the Virtual Discrete Math Colloquium on the analogue of Whitney’s theorem for the locally planar embedding of graphs on a surface. The title of his talk was “A Whitney type theorem for surfaces: characterising graphs with locally planar embeddings“.