Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the complex Banach conjecture   The complex conjecture of Stefan Banach states that if V is a Banach space
over the complex numbers where for some n, 1<n<dim(V), all of its n-dimensional
subspaces are isometric, then V is a Hilbert space. Mikhail Gromov proved it
for n even in 1967. Here, we prove it for n congruent to 1 mod 4.

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The categories of this paper are: ao-sci
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
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The categories of this paper are: supr-con