Claudio Possani is a brazilian professor, science and mathematical communicator and youtuber. He is an assistant professor at the Institute of Mathematics and Statistics at the University of São Paulo (IME-USP). He stood out to the general public mainly for his activity as communicator and youtuber at the "UNIVESP TV" and "USP TV" youtube channels, teaching high school and univerty level mathematics. His intellectual production focuses on the areas of the Geometry and Topology, Dynamical Systems and Applications and History of Mathematics.