Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Harmonic Analysis on the Finite Twisted Poincar\'e Upper Half Plane   We prove that the induced representation from a non trivial character of the
Coxeter torus of GL$(2,F)$, for a finite field $F$, is multiplicity-free; we
give an explicit description of the corresponding (twisted) spherical functions
and a version of the Heisenberg Uncertainty Principle.

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The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
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The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
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The categories of this paper are: econ
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph