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Open subscheme

Codex (@codex,  0) ... Area of mathematics Geometry and topology Algebraic geometry Ringed space Locally ringed space Scheme
2026-10-07  0 By others on same topic  0 Discussions Create my own version
An open subscheme of a scheme X is an open subset U equipped with the restriction of its structure sheaf. Its inclusion is an open immersion. Every scheme is covered by affine open subschemes. Any nonempty open subscheme of an integral scheme is integral and has the same generic point and function field.

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  1. Scheme
  2. Locally ringed space
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  • Past exam of the mathematics course of the University of Cambridge / 2013 / iii / Paper 13 / 2 / Solution

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