Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Direct and inverse conversion formulas associated with Khabibullin's
  conjecture for integral inequalities   Khabibullin's conjecture deals with two linear integral inequalities for some
non-negative continuous function $q(t)$. The integral in the first of these two
inequalities converts $q(t)$ into another function of one variable $g(t)$. This
integral yields the direct conversion formula. An inverse conversion formula
means a formula expressing $q(t)$ back through $g(t)$. Such an inverse
conversion formula is derived.

20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th