The Stacks project

Exercise 111.55.8. Show that given finitely many points $p_1, \ldots , p_ n \in \mathbf{C}^2$ the scheme $\mathbf{A}^2_\mathbf {C} \setminus \{ p_1, \ldots , p_ n\} $ is a union of two affine opens.

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View Exercise 111.55.8 as pdf