Twin trees II: Local structure and a universal construction

Authors
Ronan, MA Tits, J
Citation
Ma. Ronan et J. Tits, Twin trees II: Local structure and a universal construction, ISR J MATH, 109, 1999, pp. 349-377
Citations number
3
Categorie Soggetti
Mathematics
Journal title
ISRAEL JOURNAL OF MATHEMATICS
ISSN journal
00212172 → ACNP
Volume
109
Year of publication
1999
Pages
349 - 377
Database
ISI
SICI code
0021-2172(1999)109:<349:TTILSA>2.0.ZU;2-P
Abstract
We investigate the local structure of twin trees, and produce for any semi- homogeneous tree T a "universal twin" that contains, in a natural way, all trees twinned with T. Our methods allow us to show that there are uncountab ly many isomorphism classes of twinnings involving any semi-homogeneous tre e.