Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Abrikosov Flux Lattice in Planar Crystals of YBaCuO   Anisotropic London Theory is used to predict the Abriskosv flux lattice in
planar crystals of YBaCuO. By taking into account the orientation of the flux
lattice as a function of applied field it is shown that the vortex chain state
is observed in Bitter pattern experiments.

28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
3
The categories of this paper are: physics
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess