Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Log canonical thresholds on Gorenstein canonical del Pezzo surfaces   We classify all the effective anticanonical divisors on weak del Pezzo
surfaces. Through this classification we obtain the smallest number among the
log canonical thresholds of effective anticanonical divisors on a given
Gorenstein canonical del Pezzo surface.

8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex