At the end of this proposition, it is stated that the rows are split. However, not every short exact sequence of $R$-modules splits.
Is there an error in this proposition?
2026-03-26 14:21:09.1774534869
Is there an error in this proposition? Is every row of this diagram split? (from Dummit and Foote's Abstract Algebra)
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It should say the rows above the original sequence are split.