Solutions are written in the same explicit style as the main text: every
rw/have/intro is one step. We avoid shortcuts (simp, unexplained
rfl) except when a step is truly definitional and there is nothing left
to explain.
Sections
- Chapter 1: First steps
- Chapter 3: Propositions and proofs
- Chapter 4: Tactics
- Chapter 5: Rigor check
- Chapter 6: Groups
- Chapter 7: Group examples and basic theorems
- Chapter 8: Rings
- Chapter 9: Ring examples and basic theorems
- Chapter 10: Modules over a ring
- Chapter 11: Quivers and path algebras