(end of 20)
Difficult- I don't understand how you would do examples 6.1.13-6.1.15. I think I understand the paragraph about principle idea but then I do not get how you do problems with that. The rest of the lecture about congruence seems to make sense though. Cosets might confuse me a little but I think I can figure them out.
Reflective- I think this ideal stuff is cool because it ties together more stuff that we have done previously like subrings, congruence and mod stuff.
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