Exercise 111.7.4. Let A be a ring. Let M be a finite A-module. Let S \subset A be a multiplicative set. Assume that S^{-1}M = 0. Show that there exists an f \in S such that the principal localization M_ f = \{ 1, f, f^2, \ldots \} ^{-1}M is zero.
Exercise 111.7.4. Let A be a ring. Let M be a finite A-module. Let S \subset A be a multiplicative set. Assume that S^{-1}M = 0. Show that there exists an f \in S such that the principal localization M_ f = \{ 1, f, f^2, \ldots \} ^{-1}M is zero.
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