Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the duality of variable Triebel-Lizorkin spaces   The aim of this paper is to prove duality of Triebel-Lizorkin spaces $%
F_{1,q\left( \cdot \right) }^{\alpha \left( \cdot \right) }$. First, we prove
the duality of associated sequence spaces. Then from the so-called $% \varphi
$-transform characterization in the sense of Frazier and Jawerth, we deduce the
main result of this paper.

26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga