Lectures 28
The fundamental homomorphism theorem: concluded the proof and discussion.
Lectures 29
A little more on the fundamental homomorphism theorem including an example with Z_6 and Z_3. Definition of a ring.
Lectures 30 & 31
Examples of rings: Commutative and noncommutative (quaternions). Leading to the definition of a division ring and a field. Proved some easy properties of rings.