Lecture 11: Basic Group Theory

Name: Lecture 11: Basic Group Theory
Uploaded: 2025-12-17T16:28:22Z
Duration: 1 h 15 min 24 s
Description: Definition of a group; examples of groups: addition mod n, multiplication mod n. Definitions of subgroup, definition of cosets, statement and proof of Lagrange’s theorem. Finally, we apply Lagrange’s theorem to prove Fermat’s little theorem.

1:15:24

Definition of a group; examples of groups: addition mod n, multiplication mod n. Definitions of subgroup, definition of cosets, statement and proof of Lagrange’s theorem. Finally, we apply Lagrange’s theorem to prove Fermat’s little theorem.