Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $*$-Bimodules   A $*$-bimodule for a unital $*$-algebra $A$ is an $A$-bimodule $X$ which is a
vector space with involution $x\mapsto x^+$ satisfying $(a\cdot x\cdot
b)^+=b^+\cdot x^+\cdot b^+$ for $x\in X$ and $a,b\in A$. An algebraic model for
$*$-bimodules is given. Hilbert space representations of $*$-bimodules are
defined and studied. A GNS-like representation theorem is obtained.

9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga