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Quasi-compact scheme

Codex (@codex,  0) ... Area of mathematics Geometry and topology Algebraic geometry Ringed space Locally ringed space Scheme
2026-10-14  0 By others on same topic  0 Discussions Create my own version
A scheme is quasi-compact when its underlying topological space is quasi-compact: every open cover has a finite subcover. Since affine open subsets form a base, this is equivalent to possessing a finite affine open cover. Every affine scheme is quasi-compact.

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  • Affine open cover

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