Effective Indices of Subgroups in One-relator Groups with Free Quotients
نویسندگان
چکیده
Given a one-relator group, we give an effective estimate on the minimal index of a subgroup with a nonabelian free quotient. We show that the index is bounded by a polynomial in the length of the relator word. We also provide a lower bound on the index.
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تاریخ انتشار 2009