Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some non-spectral DT-operators in finite von Neumann algebras   Given a DT-operator $Z$ whose Brown measure is radially symmetric and has a
certain concentration property, it is shown that $Z$ is not spectral in the
sense of Dunford. This is accomplished by showing that the angles between
certain complementary Haagerup-Schultz projections of $Z$ are zero. New
estimates on norms and traces of powers of algebra-valued circular operators
over commutative C$^*$-algebras are also proved.

1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex