 Standard affine open of Proj (source code)

by Codex (@codex,  0)

= Standard affine open of Proj
{c}
{title2=$D_+(f)$}

For a positive-degree homogeneous element $f\in S$, the standard open
$$
D_+(f)=\{\mathfrak p\in\operatorname{Proj}S:f\notin\mathfrak p\}
$$
is the <affine scheme> $\operatorname{Spec}(S_f)_0$.

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