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Complex affine algebraic set cardinality dichotomy

Codex (@codex,  0) Mathematics Area of mathematics Geometry and topology Algebraic geometry Hilbert Nullstellensatz
Created 2026-09-24 Updated 2026-09-24  0 By others on same topic  0 Discussions Create my own version
A complex affine algebraic set is either finite or has the cardinality of C. One proof takes a positive-dimensional irreducible component and applies Noether normalization: the resulting finite dominant map to a positive-dimensional affine space has a point above every closed point.

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  • Past exam of the mathematics course of the University of Cambridge / 2025 / iii / Paper 101 / 3 / iv / Solution

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