Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ellipsoidal effect in the symbiotic star YY Her   A new estimation of the orbital period of YY Her on the base of our and
published observations is presented. Phased light curves in RI bands show
evidently ellipsoidal effect connected with the tidal distortion of the giant
surface.

28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin