On the Intersection of Double Cosets in
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R.G. Burns; S.-M. Kam
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Article
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1998
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Elsevier Science
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English
โ 244 KB
It is shown that if H, K are any finitely generated subgroups of a free group F and U is any cyclic subgroup of F, then any intersection Hg U l Kg U of double 1 2 ลฝ . cosets contains only a finite number of double cosets H l K gU, and an explicit upper bound for this number is given in terms of the