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Coflat Modules and Exact Sequence | ||
| journal of kerbala university | ||
| Article 1, Volume 9, Issue 0, 2013, Pages 38-40 PDF (0 K) | ||
| Author | ||
| Amjad Hamead Alhusiny | ||
| Abstract | ||
| We know that a right R-module C is flat if and only if every short exact sequence O→A→B→C→O of right R-modules is pure. Dually a right R-module A is coflat if ever short exact sequence O→A→B→C→O of right R-modules is copure. Co flat modules are defined in several ways, (as shown in [2] and [4]), In this paper it has shown that these definitions are equivalents. And we shell prove that every direct sum of coflat modules is coflat. | ||
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