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3
Proofs that require fundamentally new ways of thinking
4
How to introduce notions of flat, projective and free modules?
4
How to solve a quadratic equation in characteristic 2 ?
1
Maximal Cohen Macaulay modules over regular factor rings.
2
Infinite direct product of the integers not a free module over the integers
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Structure theorem of f.g. modules over a (non) PID
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Undergraduate math research
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Computational Algebra - Where?