Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effective cones of quotients of moduli spaces of stable n-pointed curves
  of genus zero   Let X_n := \bar M_{0,n}, the moduli space of n-pointed stable genus zero
curves, and let X_{n,m} be the quotient of X_n by the action of the symmetric
group S_{n-m} on the last n-m marked points. The cones of effective divisors of
X_{n,m}, m = 0,1,2, are calculated. Using this, upper bounds for the cones
Mov(X_{n,m}) generated by divisors with moving linear systems are calculated, m
= 0,1, along with the induced bounds on the cones of ample divisors of \bar M_g
and \bar M_{g,1}. As an application, the cone of effective divisors of \bar
M_{2,1} is analyzed in detail.

19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con