Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mass distribution of highly flattened galaxies and modified Newtonian
  dynamics   Dynamics of spiral galaxies derived from a given surface mass density has
been derived earlier in a classic paper. We try to transform the singular
elliptic function in the integral into a compact integral with regular elliptic
function. Solvable models are also considered as expansion basis for RC data.
The result makes corresponding numerical evaluations easier and analytic
analysis possible. It is applied to the study of the dynamics of Newtonian
system and MOND as well. Careful treatment is shown to be important in dealing
with the cut-off of the input data.

22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
16
The categories of this paper are: stat
9
The categories of this paper are: nlin