Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On quasi-affine transforms of Read's operator   We show that C.J.Read's example of an operator T on l_1 which does not have
any non-trivial invariant subspaces is not the adjoint of an operator on a
predual of l_1. Furthermore, we present a bounded diagonal operator D such that
even though its inverse is unbounded, but D^{-1}TD is a bounded operator with
invariant subspaces, and is adjoint to an operator on c_0.

24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph