Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Representations of some Hopf algebras associated to the symmetric group
  S_n   We study the representations and their Frobenius-Schur indicators of two
semisimple Hopf algebras related to the symmetric group $S_n$, namely the
bismash products $H_n = k^{C_n}# kS_{n-1}$ and its dual $J_n = k^{S_{n-1}}#
kC_n = (H_n)^*,$ where $k$ is an algebraically closed field of characteristic
0. Both algebras are constructed using the standard representation of $S_n$ as
a factorizable group, that is $S_n = S_{n-1}C_n = C_nS_{n-1}$. We prove that
for $H_n$, the indicators of all simple modules are +1. For the dual Hopf
algebra $J_n = k^{S_{n_1}}# kC_n$, the indicator can have values either 0 or 1.
When $n = p$, a prime, we obtain a precise result as to which representations
have indicator +1 and which ones have 0; in fact as $p \to \infty$, the
proportion of simple modules with indicator 1 becomes arbitrarily small. We
also prove a result about Frobenius-Schur indicators for more general bismash
products $H =k^G# kF$, coming from any factorizable group of the form $L = FG$
such that $F\cong C_p.$ We use the definition of Frobenius-Schur indicators for
Hopf algebras, as described in work of Linchenko and the second author, which
extends the classical theorem of Frobenius and Schur, for a finite group $G.$

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The categories of this paper are: nlin
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The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ex
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The categories of this paper are: q-fin
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The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol
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The categories of this paper are: alg-geom
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The categories of this paper are: math-ph
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The categories of this paper are: funct-an
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The categories of this paper are: cond-mat
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The categories of this paper are: eess