Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A note on an example by van Mill   Improving on an earlier example by J. van Mill, we prove that there exists a
zero-dimensional compact space of countable pi-weight and uncountable character
which is homogeneous under MA+notCH, but not under CH.

19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph