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Commutative rings, modules, ideals, homological algebra, computational aspects, invariant theory, connections to algebraic geometry and combinatorics.

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Preimage of a constructible set in spectrum of a subring

See for example Tag 05F4. If you click through you find the following argument: write $K$ as the image of a map $\text{Spec}(A) \to \text{Spec}(R)$ for some ring map $R \to A$; this is where you use t …
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