Lecture 6. Flat Modules

  1. 00:16Higher Torsion Lemma
  2. 03:01Checking Properties of Flat Modules
  3. 12:10Flat Is Equivalent to Torsion-Free
  4. 21:56Second Proof
  5. 37:26Principal Ideal Domain Case
  6. 39:14Flatness and Injectivity Relation
  7. 45:06Second Step of the Proof
  8. 49:44Injectivity Criterion
  9. 55:22Theorem About Flat Modules
  10. 01:08:13Ext Functor