Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evolution of National Nobel Prize Shares in the 20th Century   We analyze the evolution of cumulative national shares of Nobel Prizes since
1901, properly taking into account that most prizes were divided among several
laureates. We rank by citizenship at the moment of the award, and by country of
birth. Surprisingly, graphs of this type have not been published before, even
though they powerfully illustrate the century's migration patterns (brain
drains and gains) in the sciences and other fields.

31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn