# Problem Sheet J

This Problem Sheet is based on Lectures 18 and 19.

- Problem 1 is hell. Enjoy. ðŸ˜ˆ
- Problem 2 is much prettier.
- Problem 3 is linear algebra.
- Problem 4 looks horrendous, but itâ€™s actually quite short. If you are scared, try proving the result first for $\mathcal{A}(A,B) = A \otimes B$.
- Problem 5 identifies all possible tensor derivations.

Comments and questions?