Dimensions of ℝ-trees and self-similar fractal spaces of nonpositive curvature
Dimensions of ℝ-trees and self-similar fractal spaces of nonpositive curvature
复制标题
ℝ树的维数和非正曲率的自相似分形空间
DOI:
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发表时间:
2007
期刊:
影响因子:
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通讯作者:
V. Berestovskii
中科院分区:
文献类型:
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作者:
P. Andreev;V. Berestovskii
We study various dimensions of spaces with nonpositive curvature in the A. D. Alexandrov sense, in particular, of ℝ-trees. We find some conditions necessary and sufficient for the metric space to be an ℝ-tree and clarify relations between the topological, Hausdorff, entropy, and rough dimensions. We build the examples of ℝ-trees and CAT(0)-spaces in which strict inequalities between the topological, Hausdorff, and entropy dimensions hold; we also show that the Hausdorff and entropy dimensions can be arbitrarily large while the topological dimension remains fixed.