There is a sentence in the following proof (the second proof) that says " by a basic theorem about prime ideals we have...."
What is that basic theorem? Thank you.
2026-03-30 16:57:54.1774889874
Basic Theorem about prime ideal
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I guess it is the fact that the prime ideals of a ring of fractions $S^{-1}R$ correspond bijectively to the prime ideals of $R$ which do not meet $S$.