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From Ben: Maggie, we'll give you time to finish up 34. Jacob, we'll give you time to finish up 35. Both parts should be quite quick. If you are lost on 36, it's OK to move on. If you can work with examples, but not the full proof, then you can still do 37 or 38. Problem 39 starts getting into the formal definition of a group.
If you are ready to present one, click "edit" and add your name to the list below.
  • 34 $(1\Rightarrow 2)$ - Maggie
  • 35 (converse) - Jacob
  • 36 - Vladimir
  • 37 - Jacob
  • 38 -
  • 39 -
  • 40 - Veith
  • 41 -
  • 42 -

For more problems, see AllProblems