Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Wave equation and multiplier estimates on ax+b groups   Let L be the distinguished Laplacian on certain semidirect products of R by
R^n which are of ax+b type. We prove pointwise estimates for the convolution
kernels of spectrally localized wave operators for arbitrary time and scaling
parameter.

17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat