Finitely Presented Subgroups of a Product of Two Free Groups
نویسندگان
چکیده
We use van Kampen diagram techniques to give a new geometric proof of Baumslag and Roseblade’s result that a non–free finitely presented subgroup of a direct product of two free groups is virtually a product of subgroups of the factors.
منابع مشابه
2 3 Ju n 20 05 Subgroups of direct products of elementarily free groups
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تاریخ انتشار 2000