Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An introduction to the Ribe program   This article accompanies the 10th Takagi Lectures, delivered by the author at
RIMS, Kyoto, on May 26 2012. It contains an exposition of results,
applications, and challenges of the Ribe program.

34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom