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dc.contributor.author
Wade, Richard D.
dc.contributor.author
Brück, Benjamin
dc.date.accessioned
2022-01-24T13:04:10Z
dc.date.available
2022-01-21T13:59:30Z
dc.date.available
2022-01-24T13:04:10Z
dc.date.issued
2021-01-20
dc.identifier.uri
http://hdl.handle.net/20.500.11850/527493
dc.description.abstract
A theorem of Brady and Meier states that a right-angled Artin group is a duality group if and only if the flag complex of the defining graph is Cohen--Macaulay. We use this to give an example of a RAAG with the property that its outer automorphism group is not a virtual duality group. This gives a partial answer to a question of Vogtmann. In an appendix, Brück describes how he used a computer-assisted search to find further examples.
en_US
dc.language.iso
en
en_US
dc.publisher
Cornell University
en_US
dc.title
A note on virtual duality and automorphism groups of right-angled Artin groups
en_US
dc.type
Working Paper
ethz.journal.title
arXiv
ethz.pages.start
2101.08225
en_US
ethz.size
10 p.
en_US
ethz.identifier.arxiv
2101.08225
ethz.publication.place
Ithaca, NY
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02000 - Dep. Mathematik / Dep. of Mathematics::02003 - Mathematik Selbständige Professuren::08802 - Iozzi, Alessandra (Tit.-Prof.)
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02000 - Dep. Mathematik / Dep. of Mathematics::02003 - Mathematik Selbständige Professuren::08802 - Iozzi, Alessandra (Tit.-Prof.)
en_US
ethz.relation.isPreviousVersionOf
10.3929/ethz-b-000619525
ethz.date.deposited
2022-01-21T13:59:36Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Metadata only
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ethz.rosetta.installDate
2022-01-24T13:04:16Z
ethz.rosetta.lastUpdated
2022-01-24T13:04:16Z
ethz.rosetta.versionExported
true
ethz.COinS
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