Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spectral isometries onto algebras having a separating family of
  finite-dimensional irreducible representations   We prove that if $\mathcal{A}$ is a complex, unital semisimple Banach algebra
and $\mathcal{B}$ is a complex, unital Banach algebra having a separating
family of finite-dimensional irreducible representations, then any unital
linear operator from $\mathcal{A}$ onto $\mathcal{B}$ which preserves the
spectral radius is a Jordan morphism.

27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga