Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-degenerate surfaces of revolution in Minkowski space that satisfy
  the relation $aH+bK=c$   In this work, we study spacelike and timelike surfaces of revolution in
Minkowski space $\e_{1}^{3}$ that satisfy $aH+bK=c$, where $H$ and $K$ denote
the mean curvature and the Gauss curvature of the surface and $a$, $b$ and $c$
are constants. The classification depends on the causal character of the axis
of revolution and in all the cases, we obtain a first integral of the equation
of the generating curve of the surface.

23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci