R R is Z Z graded ring and 0≠f∈R1, 0 ≠ f ∈ R 1

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http://ift.tt/eA8V8J

Suppose $R$ is $\mathbb{Z}$ graded ring and $0\neq f \in R_1.$ Then I want to show that $R_f \cong S[X,X^{-1}],$ where $S=(R_f)_0$ and $X$ ...

from Algebra

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