Commensurations of Aut(FN) and Its Torelli Subgroup

For N ≥3, the abstract commensurators of both Aut( F N ) and its Torelli subgroup IA N are isomorphic to Aut( F N ) itself.

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Bibliographic Details
Published in:Geometric and functional analysis 2024, Vol.34 (5), p.1310-1336
Main Authors: Bridson, Martin R., Wade, Richard D.
Format: Article
Language:English
Subjects:
Analysis
Mathematics
Mathematics and Statistics
Subgroups
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Description
Summary:For N ≥3, the abstract commensurators of both Aut( F N ) and its Torelli subgroup IA N are isomorphic to Aut( F N ) itself.
ISSN:1016-443X
1420-8970
DOI:10.1007/s00039-024-00681-y