Here is the part that I do not understand in the proof of theorem 15 (on pg. 261 of Dummit & Foote, 3rd edition):
Here is Theorem 15:
Can someone tell me please how this shows the uniqueness of the field of fraction $Q$?
2026-05-16 09:29:45.1778923785
Understanding the uniqueness of the ring of fraction proof in D&F.
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