Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hierarchical Archimax copulas   The class of Archimax copulas is generalized to hierarchical Archimax copulas
in two ways. First, a hierarchical construction of $d$-norm generators is
introduced to construct hierarchical stable tail dependence functions which
induce a hierarchical structure on Archimax copulas. Second, by itself or
additionally, hierarchical frailties are introduced to extend Archimax copulas
to hierarchical Archimax copulas in a similar way as nested Archimedean copulas
extend Archimedean copulas. Possible extensions to nested Archimax copulas are
discussed. Additionally, a general formula for the density and its evaluation
of Archimax copulas is introduced.

17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs