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Results tagged with ag.algebraic-geometry
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user 28104
Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology.
8
votes
Any other definition for algebraic number than the root of algebraic equation?
Assuming ZFC, one can characterize the algebraic numbers in $\mathbb{C}$ as those numbers which lie in finite orbits under the action of ${\rm Aut}(\mathbb{C})$ on $\mathbb{C}$.
- 19.6k
5
votes
Fixed space of the square of a symmetric matrix over $\mathbb{F}_2$
As Geoff Robinson has already said, the answer to the question is no.
In dimension $4$, there are in total $120$ counterexamples, of which
$96$ have kernel of dimension $1$, and $24$ have kernel of di …
- 19.6k