Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some explicit elliptic modular surfaces   We consider algebraic surfaces, recently constructed by Schreieder, that are
smooth models of the quotient of the self-product of a complex hyperelliptic
curve by a $(\mathbb{Z}/3^c\mathbb{Z})$-action. We show that these surfaces are
elliptic modular surfaces in the sense of Shioda, meaning in particular that
they are universal families of explicit moduli of elliptic curves.

20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an