Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the pre-lambda ring structure on the Grothendieck ring of stacks and
  the power structures over it   In this note we discuss a generalization ("extension") of the pre-lambda
structure on the Grothendieck ring of quasi-projective varieties and of the
corresponding power structure over it to the Grothendieck ring of stacks,
discuss some of their properties and give some explicit formulae for the
Kapranov zeta function for some stacks.

27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs