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In the mathematical field of group theory, the Baumslag–Solitar groups are examples of two-generator one-relator groups that play an important role in combinatorial group theory and geometric group theory as (counter)examples and test-cases. They are given by the group presentation For each integer m and n, the Baumslag–Solitar group is denoted BS(m, n). The relation in the presentation is called the Baumslag–Solitar relation. Some of the various BS(m, n) are well-known groups. BS(1, 1) is the free abelian group on two generators, and BS(1, −1) is the fundamental group of the Klein bottle.

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  • Baumslag–Solitar group (en)
  • Groupe de Baumslag-Solitar (fr)
  • Группа Баумслага — Солитера (ru)
  • Група Баумслага — Солітера (uk)
rdfs:comment
  • En mathématiques et notamment en théorie des groupes, les groupes de Baumslag-Solitar sont des exemples de groupes à deux générateurs et un relateur qui jouent un rôle important dans la théorie combinatoire des groupes et en théorie géométrique des groupes comme exemples ou contre-exemples. (fr)
  • Група Баумслага — Солітера — група з двома твірними і і одним співвідношенням Зазвичай, цю групу позначають . (uk)
  • Группа Баумслага — Солитера — группа с двумя образующими и и одним соотношением Обычно, эта группа обычно обозначается . (ru)
  • In the mathematical field of group theory, the Baumslag–Solitar groups are examples of two-generator one-relator groups that play an important role in combinatorial group theory and geometric group theory as (counter)examples and test-cases. They are given by the group presentation For each integer m and n, the Baumslag–Solitar group is denoted BS(m, n). The relation in the presentation is called the Baumslag–Solitar relation. Some of the various BS(m, n) are well-known groups. BS(1, 1) is the free abelian group on two generators, and BS(1, −1) is the fundamental group of the Klein bottle. (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/BS(1,2)_Cayley_Graph.gif
  • http://commons.wikimedia.org/wiki/Special:FilePath/Baumslag-Solitar_Cayley.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Baumslag-Solitar_Cayley_3D.svg
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  • D.J. Collins (en)
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  • B/b130070 (en)
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  • Baumslag–Solitar group (en)
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  • In the mathematical field of group theory, the Baumslag–Solitar groups are examples of two-generator one-relator groups that play an important role in combinatorial group theory and geometric group theory as (counter)examples and test-cases. They are given by the group presentation For each integer m and n, the Baumslag–Solitar group is denoted BS(m, n). The relation in the presentation is called the Baumslag–Solitar relation. Some of the various BS(m, n) are well-known groups. BS(1, 1) is the free abelian group on two generators, and BS(1, −1) is the fundamental group of the Klein bottle. The groups were defined by Gilbert Baumslag and Donald Solitar in 1962 to provide examples of non-Hopfian groups. The groups contain residually finite groups, Hopfian groups that are not residually finite, and non-Hopfian groups. (en)
  • En mathématiques et notamment en théorie des groupes, les groupes de Baumslag-Solitar sont des exemples de groupes à deux générateurs et un relateur qui jouent un rôle important dans la théorie combinatoire des groupes et en théorie géométrique des groupes comme exemples ou contre-exemples. (fr)
  • Група Баумслага — Солітера — група з двома твірними і і одним співвідношенням Зазвичай, цю групу позначають . (uk)
  • Группа Баумслага — Солитера — группа с двумя образующими и и одним соотношением Обычно, эта группа обычно обозначается . (ru)
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