Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Slant Ruled Surfaces   In this study, we define some new types of ruled surfaces called slant ruled
surfaces. We give some characterizations for a regular ruled surface to be a
slant ruled surface in Euclidean 3- space. We show that if the slant ruled
surface is developable then the striction curve is a general helix or a slant
helix according to the kind of surface. Moreover, we give the relationships
between slant ruled surfaces and some offset surfaces such as Bertrand offsets
and Mannheim offsets.

12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs