Solutions to Paolo Aluffi's Algebra: Chapter 0.
Algebra: Chapter 0 is a highly regarded introduction to abstract algebra and category theory. The writing is fantastic and the exercises are very fun; it's like CS 135 assignments in that they're not too difficult (compare: advanced math courses), but very insightful and rigorous (compare: CS 251).
I am doing this for two reasons:
- If you want to start working through the text as well you can! It's a very good text that assumes no prior experience except for some mathematical maturity, i.e. you should be able to write mathematical proofs.
- So that you can spot errors, should you find yourself reading the solutions. I'm not doing the exercises as part of a course so I don't really get graded.