Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analytic extensions of algebraic isomorphisms   Let $\Psi : X_1 \to X_2$ be an isomorphism of closed affine algebraic
subvarities of $\C^n$ such that $n > \max (2\dim X_1, \dim TX_1)$. We prove
that $\Psi$ can be extended to a holomorphic automorphism of $\C^n$.
Furthermore, when $\Psi$ is an isomorphism of curves such an extension exists
for every $n\geq 3$ even when $\dim TX_1=n$.

12
The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
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The categories of this paper are: quant-ph
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
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The categories of this paper are: dg-ga
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The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con