Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Closed strings as single-valued open strings: A genus-zero derivation   Based on general mathematical assumptions we give an independent, elementary
derivation of a theorem by Francis Brown and Cl\'ement Dupont which states that
tree-level amplitudes of closed and open strings are related through the
single-valued map `sv'. This relation can be traced back to the underlying
moduli-space integrals over punctured Riemann surfaces of genus zero. The
sphere integrals $J$ in closed-string amplitudes and the disk integrals $Z$ in
open-string amplitudes are shown to obey $J = {\rm sv} \, Z$.

1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin