Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Expoential bounds on the number of causal triangulations   We prove that the number of combinatorially distinct causal 3-dimensional
triangulations homeomorphic to the 3-dimensional sphere is bounded by an
exponential function of the number of tetrahedra. It is also proven that the
number of combinatorially distinct causal 4-dimensional triangulations
homeomorphic to the 4-sphere is bounded by an exponential function of the
number of 4-simplices provided the number of all combinatorially distinct
triangulations of the 3-sphere is bounded by an exponential function of the
number of tetrahedra.

16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom