Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On non-adjointable semi-Weyl and semi-B-Fredholm operators over
  C*-algebras   We extend further semi-A-Fredholm theory by generalizing the results from
classical semi-Weyl theory on Hilbert spaces. Moreover, we obtain an analogue
of the results from [17] in the setting of non-adjointable operators. Finally,
we provide several examples on semi-A-Fredholm and semi- A-Weyl operators over
a unital C*-algebra A. We give also the examples of semi-A-Fredholm operators
with non-closed image.

35
The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: atom-ph
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The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
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The categories of this paper are: supr-con
3
The categories of this paper are: physics
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The categories of this paper are: funct-an
1
The categories of this paper are: cs