Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Semiheaps and Ternary Algebras in Quantum Mechanics Revisited   We re-examine the appearance of semiheaps and (para-associative) ternary
algebras in quantum mechanics. In particular, we review the construction of a
semiheap on a Hilbert space and the set of bounded operators on a Hilbert
space. The new aspect of this work is a discussion of how symmetries of a
quantum system induce homomorphisms of the relevant semiheaps and ternary
algebras.

20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th