Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Canonical models and stable reduction for plurifibered varieties   A cheap method for constructing canonical models and complete moduli for
complex projective varieties with a structure called "rational plurifibration"
is given. A result about semistable reduction (whose nature is slightly
different from alg-geom/9707012) is deduced.
  The method involves recursive application of moduli stacks of twisted stable
maps (math.AG/9908167) and a systematic circumvention of any difficult MMP
issues.

29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas