Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Invariant laminations for irreducible automorphisms of free groups   For every atoroidal iwip automorphism $\phi$ of $F_N$ (i.e. the analogue of a
pseudo-Anosov mapping class) it is shown that the algebraic lamination dual to
the forward limit tree $T_+(\phi)$ is obtained as "diagonal closure" of the
support of the backward limit current $\mu_-(\phi)$. This diagonal closure is
obtained through a finite procedure in analogy to adding diagonal leaves from
the complementary components to the stable lamination of a pseudo-Anosov
homeomorphism. We also give several new characterizations as well as a
structure theorem for the dual lamination of $T_+(\phi)$, in terms of
Bestvina-Feighn-Handel's "stable lamination" associated to $\phi$.

22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th