*CN**EURO**2021* *Theoretical and Computational Neuroscience Summer School* *14 to 21 August 2021 — Online, hosted by Tsinghua University, Beijing and IOB, Basel* *www.cneuro.net <http://www.cneuro.net>* *About CNeuro* How intelligence and behavior emerge from complex and intricate interactions within the brain remains a deep and unsolved mystery, central to an exciting area of interdisciplinary research. The past decade has seen rapid progress in experimental tools that now make it possible to monitor and manipulate brain circuits in unprecedented detail. This evolution presents challenges and opportunities for both experimentalists and theorists, as the complex algorithmics of brain function and the intricate interactions among neurons cannot be approached with experiments alone. Mathematical theory is instrumental in the emergence of theoretical insights and frameworks that can help guide experimental work and identify unifying principles of brain function. The aim of the one-week summer school will be to introduce students with a strong quantitative background (in mathematics, physics, computer science, and engineering) to the emerging field of theoretical and computational neuroscience. The course will bring together leading scientists in the field, who will deliver lectures, take part in small-group discussions, and share their personal experience and views on a range of research topics. The distinguishing feature of CNeuro is the emphasis it places on the role of systematic mathematical theory for understanding the brain, in part by stressing the connections between neuroscience, statistics, machine learning, and artificial intelligence. *Faculty* Vijay Balasubramanian (University of Pennsylvania) Dmitrii Chklovskii (Flatiron Institute) Julijana Gjorgjieva (MPI for Brain Research) Christian Machens (Champalimaud Center) Kanaka Rajan (Mount Sinai) Eric Shea-Brown (University of Washington) *Organizers* Rava Azeredo da Silveira (ENS) Stella Christie (Tsinghua University) Sen Song (Tsinghua University) Louis Tao (Peking University) Xiaoqin Wang (Johns Hopkins University) Quan Wen (USTC) *Application and deadline* Please apply by 31 May 2021; details at www.cneuro.net/cneuro2021.