Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A symmetry for vanishing cosmological constant in an extra dimensional
  toy model   We introduce a symmetry principle that forbids a bulk cosmological constant
in six and ten dimensions. Then the symmetry is extended so that it insures
absence of 4-dimensional cosmological constant induced by the six dimensional
curvature scalar, at least, for a class of metrics. A small cosmological
constant may be induced by breaking of the symmetry by a small amount.

24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics