Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hopf actions on filtered regular algebras   We study finite dimensional Hopf algebra actions on so-called filtered
Artin-Schelter regular algebras of dimension n, particularly on those of
dimension 2. The first Weyl algebra is an example of such on algebra with n=2,
for instance. Results on the Gorenstein condition and on the global dimension
of the corresponding fixed subrings are also provided.

5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph