Groupes pleins-topologiques [d'apr\`es Matui, Juschenko, Monod...].

Groupes pleins-topologiques [d'apr\`es Matui, Juschenko, Monod...].
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Groupes pleins-topologiques [dapr`es Matui, Juschenko, Monod...]。

DOI:
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发表时间:
2020
期刊:
arXiv: Group Theory
影响因子:
--
通讯作者:
Y. Cornulier
Y. Cornulier
中科院分区:
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文献类型:
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作者:
Y. Cornulier

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这是2013年1月给出的布尔巴基研讨会的书面版本,并于2014年出版(模取随后添加的额外早期参考资料)。它描述了无限的、有限生成的可服从单群的第一个构造。它从拓扑满群的一般研究开始,并指出了这种群的第一次出现。然后证明了定理,即无限极小子移的拓扑满群的派生子群是简单有限生成的(Matui 2006)和可服从的(Juschenko-Monod 2013,由Grigorchuk-Medynets推测)。讨论了这些基团的其他一些性质。自2013年以来的众多后续发展都没有被提及。
This is the written version of the Bourbaki seminar given in January 2013 and published in 2014 (modulo an additional early reference added subsequently). It describes the first construction of infinite, finitely generated amenable simple groups. It starts with a general study of topological-full groups, along with indications on the first appearances of such groups. Then the theorem is proved, namely that the derived subgroup of the topological-full group of an infinite minimal subshift is both simple and finitely generated (Matui 2006) and amenable (Juschenko-Monod 2013, after being conjectured by Grigorchuk-Medynets). Some other properties of these groups are discussed. None of the numerous subsequent developments since 2013 are mentioned.
区间交换变换的自由组很少见
DOI: 10.4171/ggd/209
发表时间: 2013
期刊: Groups, Geometry, and Dynamics
影响因子: --
作者:
F. Dahmani;K. Fujiwara and V. Guirardel
通讯作者: K. Fujiwara and V. Guirardel