Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Weighted Strichartz estimates and global existence for semilinear wave
  equations   We prove certain weighted Strichartz estimates and use these to prove a sharp
theorem for global existence of small amplitude solutions of $\square u=
|u|^p$, thus verifying the so-called "Strauss conjecture".

36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys