Polynomial-time proofs that groups are hyperbolic
Polynomial-time proofs that groups are hyperbolic
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群是双曲线的多项式时间证明
DOI:
10.1016/j.jsc.2020.08.003
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发表时间:
2021
影响因子:
0.7
通讯作者:
Holt D
中科院分区:
文献类型:
--
作者:
Holt D
It is undecidable in general whether a given finitely presented group is word hyperbolic. We use the concept ofpregroups, introduced by Stallings (1971), to define a new class of van Kampen diagrams, which represent groups as quotients ofvirtuallyfree groups. We then present a polynomial-time procedure that analyses these diagrams, and either returns an explicit linear Dehn function for the presentation, or returnsfail, together with its reasons for failure. Furthermore, if our procedure succeeds we are often able to produce in polynomial time a word problem solver for the presentation that runs in linear time. Our algorithms have been implemented, and when successful they are many orders of magnitude faster than KBMAG, the only comparable publicly available software.
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DOI:
10.1007/s00039-003-0425-8
发表时间:
1991
期刊:
Geometric & Functional Analysis GAFA
影响因子:
--
作者:
J. Alonso;T. Brady;D. Cooper;V. Ferlini;Lustig;M. Mihalik;M. Shapiro;H. Short
通讯作者:
H. Short
影响因子:
0.6
作者:
I. Lysenok
通讯作者:
I. Lysenok
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
G. Havas;D. Holt
通讯作者:
D. Holt
DOI:
10.24033/bsmf.2734
发表时间:
2013
期刊:
arXiv: Group Theory
影响因子:
--
作者:
Alexandre Martin
通讯作者:
Alexandre Martin
DOI:
--
发表时间:
1995
期刊:
Geometric and Computational Perspectives on Infinite Groups
影响因子:
--
作者:
D. Holt
通讯作者:
D. Holt