Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Derivation of Relativistic Yakubovsky Equations under Poincar\'e
  Invariance   Relativistic Faddeev-Yakubovsky four-nucleon scattering equations are derived
including a 3-body force. We present these equations in the momentum space
representation. The quadratic integral equations using the iteration method, in
order to obtain boosted potentials and 3-body force, are demonstrated.

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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: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg
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The categories of this paper are: econ
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The categories of this paper are: physics
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The categories of this paper are: supr-con
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The categories of this paper are: q-fin
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The categories of this paper are: chem-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: math-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: astro-ph
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The categories of this paper are: eess
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The categories of this paper are: alg-geom