Week 3: Most confusing notion_MA453Fall2008walther is here...
Week 4: Starting to get nervous about the midterm_MA453Fall2008walther...
Week 5: Confusion about cosets._MA453Fall2008walther
Week 6: More midterm_MA453Fall2008walther questions.
Week 8: Terminology_MA453Fall2008walther
Week 9: Difficulty with rings_MA453Fall2008walther
