Abstract
Let Γ be anS-arithmetic group in a semisimple group. We show that if Γ has the congruence subgroup property then the number of isomorphism classes of irreducible complexn-dimensional characters of Γ is polynomially bounded. In characteristic zero, the converse is also true. We conjecture that the converse also holds in positive characteristic, and we prove some partial results in this direction.
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Dedicated to Andy Magid on the occasion of his sixtieth birthday
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Lubotzky, A., Martin, B. Polynomial representation growth and the congruence subgroup problem. Isr. J. Math. 144, 293–316 (2004). https://doi.org/10.1007/BF02916715
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DOI: https://doi.org/10.1007/BF02916715