(Possibly Imperfect) Proof #2

You should work on this problem individually (no partners) and submit your answers as a PDF file to Gradescope.
You should receive an email from the instructor with a proof submitted by one of your classmates.
Read the proof carefully and then answer the questions below. Only the instructor will see your feedback (not any classmate).
Nevertheless, it is good practice to always be respectful, and any criticism should be constructive.

Questions

1. What type of proof are you providing feedback for (e.g., proof by contradiction, proof using a definition, proof by induction, etc.)?
2. Do you find the proof presented in a way that is clear or confusing to understand?
3. What is one thing that you like about this proof and/or that this proof does well?
4. What is one thing that could be improved in this proof?
5. Is this proof entirely correct? Please explain your reasoning carefully here.