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The 6-strand braid group is CAT(0)

Abstract:
We show that braid groups with at most 6 strands are CAT(0) using the close connection between these groups, the associated non-crossing partition complexes, and the embeddability of their diagonal links into spherical buildings of type A. Furthermore, we prove that the orthoscheme complex of any bounded graded modular complemented lattice is CAT(0), giving a partial answer to a conjecture of Brady and McCammond.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1007/s10711-015-0138-9

Authors

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Institution:
University of Oxford
Division:
MPLS
Department:
Mathematical Institute
Oxford college:
Hertford College
Role:
Author
ORCID:
0000-0002-5536-9070


Publisher:
Springer
Journal:
Geometriae Dedicata More from this journal
Volume:
182
Pages:
263-286
Publication date:
2016-01-12
Acceptance date:
2015-12-28
DOI:
EISSN:
1572-9168
ISSN:
0046-5755


Language:
English
Keywords:
Pubs id:
1118430
Local pid:
pubs:1118430
Deposit date:
2020-07-24
ARK identifier:

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