Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Spin Structure of the Proton and Polarized Collider Physics   We summarise the present status of the proton spin problem and the physics
possibilities for future polarized ep and pp colliders. This summary is based
on the presentations and discussion sessions at the workshop ``The Spin
Structure of the Proton and Polarized Collider Physics'' (Trento, July 23-28,
2001).

29
The categories of this paper are: funct-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: alg-geom
2
The categories of this paper are: math
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The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
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The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: stat
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-th
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The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc