Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Equivariant Dixmier-Douady Classes   An equivariant bundle gerbe \`a la Meinrenken over a $G$-manifold $M$ is
known to be a special type of $S^1$-gerbe over the differentiable stack
$[M/G]$. We prove that the natural morphism relating the Cartan and simplicial
models of equivariant cohomology in degree 3 maps the Dixmier-Douady class of
an equivariant bundle gerbe \`a la Meinrenken to the Behrend-Xu-Dixmier-Douady
class of the corresponding $S^1$-gerbe.

34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex