Exercise 111.64.3 (0GRV): Units—The Stacks project

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Part 9: Miscellany
Chapter 111: Exercises
Section 111.64: Commutative Algebra, Final Exam, Fall 2021
Exercise 111.64.3: Units (cite)

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Exercise 111.64.3 (Units). What is the structure of the group of units of $\mathbf{Z}[x, 1/x]$ as an abelian group? No explanation necessary.

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