Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Light-cone Variables, Rapidity and All That   I give a pedagogical summary of the methods of light-cone variables, rapidity
and pseudo-rapidity. Then I show how these methods are useful in analyzing
diffractive high-energy collisions.

35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex