Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Similar Ruled Surfaces with Variable Transformations in the Euclidean
  3-space   In this study, we define a family of ruled surfaces in the Euclidean 3-space
E^3 and called similar ruled surfaces. We obtain some properties of these
special surfaces and we show that developable ruled surfaces form a family of
similar ruled surfaces if and only if the striction curves of the surfaces are
similar curves with variable transformation.

9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga