Introductory video on topology that explains the central role of topological spaces in mathematics. Examples include indiscrete and discrete topologies on a finite set X = {1,2,3} Recommended resource for topology: * Elementary Topology Problem Textbook (O. Ya. Viro, O. A. Ivanov, N. Yu. Netsvetaev, V. M. Kharlamov) Link: http://www.pdmi.ras.ru/~olegviro/topoman/eng-book-nopfs.pdf