Normal subgroups of 𝑃𝑆𝐿₂(𝑍[√-3]) (Q4717058)

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scientific article; zbMATH DE number 951959
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Normal subgroups of 𝑃𝑆𝐿₂(𝑍[√-3])
scientific article; zbMATH DE number 951959

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    Normal subgroups of 𝑃𝑆𝐿₂(𝑍[√-3]) (English)
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    30 January 1997
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    property FA
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    subgroups of finite index
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    Bianchi groups
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    HNN-groups
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    free products with amalgamation
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    triangles of finite groups
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    actions
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    contractible simplicial complex
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    congruence subgroups
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