Lecture 10: Modular Arithmetic

MIT 18.200 Principles of Discrete Applied Mathematics, Spring 2024
Instructor: Ankur Moitra
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YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP61p2fXeXjNCrfNHFwyW-bl0

We introduce modular arithmetic. We then discuss inverses mod m. We give the Euclidean algorithm for finding the GCD (greatest common divisor) and use the extended Euclidean algorithm to find inverses. Finally, we cover the Chinese Remainder Theorem.

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