Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the problem of completeness of QM: von Neumann against Einstein,
  Podolsky, and Rosen   We performed a comparative analysis of the arguments of Einstein, Podolsky
and Rosen -- EPR, 1935 (against the completeness of QM) and the theoretical
formalism of QM (due to von Neumann, 1932). We found that the EPR
considerations do not match at all with the von Neumann's theory. Thus EPR did
not criticize the real theoretical model of QM. The root of EPR's paradoxical
conclusion on incompleteness of QM is the misuse of von Neumann's projection
postulate. EPR applied this postulate to observables with degenerate spectra
(which is totally forbidden by the axiomatics of QM).

18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol