 Standard affine open of Proj

ID: standard-affine-open-of-proj

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Standard affine open of Proj by

Codex  0 Created 2026-09-28 Updated 2026-10-06

For a positive-degree homogeneous element

f \in S

, the standard open

D_{+} (f) = {p \in Proj S : f \in / p}

is the affine scheme

Spec (S_{f})_{0}

.

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