Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The topological structure of (homogeneous) spaces and groups with
  countable cs*-character   In this paper we introduce and study three new cardinal topological
invariants called the cs*, cs-, and sb-characters. The class of topological
spaces with countable cs*-character is closed under many topological operations
and contains all aleph-spaces and all spaces with point-countable cs*-network.
Our principal result states that each non-metrizable sequential topological
group with countable cs*-character has countable pseudo-character and contains
an open $k_\omega$-subgroup.

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The categories of this paper are: plasm-ph
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The categories of this paper are: bayes-an
16
The categories of this paper are: stat
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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: eess
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The categories of this paper are: q-alg
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The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th