Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bounding singular surfaces via Chern numbers   We prove the existence of a bound on the number of steps of the minimal model
program for singular surfaces in terms of discrepancies and top Chern numbers.
As an application, we prove that given $R\in\mathbb{R}$ and $\epsilon\in
(0,1)$, the class $\mathcal{F}(R,\epsilon)$ of $2$-dimensional pairs $(X,D)$ of
general type with $\epsilon$-klt singularities, $D$ with standard coefficients,
and $4c_2(X,D)-c_1^2(X,D)\leq R$, forms a bounded family.

23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg