Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Reality and Measurement of the Wavefunction   Using a simple version of the model for the quantum measurement of a two
level system, the contention of Aharonov, Anandan, and Vaidman that one must in
certain circumstances give the wavefunction an ontological as well as an
epistemological significance is examined. I decide that their argument that the
wave function of a system can be measured on a single system fails to establish
the key point and that what they demonstrate is the ontological significance of
certain operators in the theory, with the wave function playing its usual
epistemological role.

12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess