Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sticks and clubs   We study combinatorial principles known as stick and club. Several variants
of these principles and cardinal invariants connected to them are also
considered. We introduce a new kind of side-by-side product of partial orders
which we call pseudo-product. Using such products, we give several generic
extensions where some of these principles hold together with not CH and
Martin's Axiom for countable p.o.-sets. An iterative version of the
pseudo-product is used under an inaccessible cardinal to show the consistency
of the club principle for every stationary subset of limits of omega_1 together
with not CH and Martin's Axiom for countable p.o.-sets.

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The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
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The categories of this paper are: nucl-ex
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The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
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The categories of this paper are: solv-int
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The categories of this paper are: eess