Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Absence of eigenvalues of two-dimensional magnetic Schroedinger
  operators   By developing the method of multipliers, we establish sufficient conditions
on the electric potential and magnetic field which guarantee that the
corresponding two-dimensional Schroedinger operator possesses no point
spectrum. The settings of complex-valued electric potentials and singular
magnetic potentials of Aharonov-Bohm field are also covered.

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The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
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The categories of this paper are: eess
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom