Abstract Algebra : Module 4 Section 24 Part 2 Group Ring

00:00 Recap - End(A) is non-commutative ring with unity
00:45 The set RG of formal sums
03:04 Example - Z6S3
05:38 Addition Operation, RG is a group
09:12 Multiplication Operation
11:15 Computations - SageMath vs Manual
18:05 RG is a ring - Group Ring