Arithmetic Notation for Sets

In this video, I review one possible system of notation for: -Representing the set of the first n natural numbers -Cartesian products -Disjoint unions -The set of functions from one set to another This system isn't universally used, but it satisfies some nice properties and agrees with some common notational conventions. You can find some information about the history of set-exponent notation here: https://hsm.stackexchange.com/questio... Please let me know if you have any questions or comments below, and let me know some mathematical notation you think is neat!