Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sur des invariants g\'eom\'etriques associ\'es aux automorphismes du
  plan affine   We associate to each automorphism of the plane, a geometric construction with
some properties, it is the {\it{canonical resolution}}.
  We study the geometry of the canonical resolution, we deduce from it an upper
bound for a geometric invariant (the ample index) linked to an automorphism of
the affine plane and we link the structure of the effective cone of the surface
we get to values of another geometric invariant (the effective index).

30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex