A CAT(0) group with uncountably many distinct boundaries
A CAT(0) group with uncountably many distinct boundaries
复制标题
具有无数个不同边界的 CAT(0) 组
DOI:
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发表时间:
2005
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影响因子:
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通讯作者:
Julia Wilson
中科院分区:
文献类型:
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作者:
Julia Wilson
Abstract Croke and Kleiner [5] gave a construction for a family {Xα : 0 < α ≤ π/2} of CAT(0) spaces that each admit a geometric action by the same group G. They showed that ∂Xα ≉ ∂Xπ/2 for all α < π/2. We show that in fact ∂Xα ≉ ∂Xβ for all α ≠ β, so that G is a CAT(0) group with uncountably many non-homeomorphic boundaries.