groups, subgroups, homomorphisms, quotients, rings, ideals, etc.

Here is a longer summary

and collect it the following Tuesday. No late HW.

Click here for the assignments.

And here is one last assignment

The HW assignments will often require you to write

proofs. In case this is new to you, you might like to see

some sample proofs I wrote.

Also, the math notes section of my website has many proofs.

chapters in Herstein's book. I will cover the material

in Chapter 1 only briefly, and then concentrate

on chapters 2 and 3.

download it here

midterm1

midterm2

quaternions and the spin cover

notes on a HW problem

a non-Euclidean PID (by G. Bergman)

The 4-square theorem

tensor products

(not) cutting a cube into a regular tetrahedron