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Results tagged with ag.algebraic-geometry
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user 1004
Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology.
8
votes
Is being torsion a local property of module elements?
No, being torsion is not a local property, and I can give a counterexample. [Edit: This took some doing, with my initial answer containing a serious flaw. After completely reworking the construction, …
- 17.1k
22
votes
Accepted
When are complex polynomial maps almost surjective?
Being algebraically independent is indeed a necessary and sufficient condition for the image of $f$ to be dense.
As $f\colon\mathbb{C}^n\to\mathbb{C}^n$ is regular, its image is constructible and, in …
- 17.1k