The group of boundary fixing homeomorphisms of the disc is not left-orderable

被引:1
|
作者
Hyde, James [1 ]
机构
[1] Cornell Univ, Ithaca, NY 14850 USA
关键词
Homeomorphism group; disc; line; left-orderable;
D O I
10.4007/annals.2019.190.2.5
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
A left-order on a group G is a total order < on G such that for any f, g and h in G we have f < g double left right arrow hf < hg. We construct a finitely generated subgroup H of Homeo(I-2; delta I-2), the group of those homeomorphisms of the disc that fix the boundary pointwise, and show H does not admit a left-order. Since any left-order on Homeo(I-2; delta I-2) would restrict to a left-order on H, this shows that Homeo(I-2; delta I-2) does not admit a left-order. Since Homeo(I; delta I) admits a left-order, it follows that neither H nor Homeo(I-2; delta I-2) embed in Homeo(I; delta I).
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页码:657 / 661
页数:5
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