Existence of mark functions in marked metric measure spaces
Existence of mark functions in marked metric measure spaces
复制标题
标记度量测度空间中标记函数的存在性
DOI:
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发表时间:
2014
期刊:
影响因子:
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通讯作者:
Wolfgang Lohr
中科院分区:
文献类型:
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作者:
Sandra Kliem;Wolfgang Lohr
We give criteria on the existence of a so-called mark function in the context of marked metric measure spaces (mmm-spaces). If an mmm-space admits a mark function, we call it functionally-marked metric measure space (fmm-space). This is not a closed property in the usual marked Gromov-weak topology, and thus we put particular emphasis on the question under which conditions it carries over to a limit. We obtain criteria for deterministic mmm-spaces as well as random mmm-spaces and mmm-space-valued processes. As an example, our criteria are applied to prove that the tree-valued Fleming-Viot dynamics with mutation and selection from previous works admits a mark function at all times, almost surely. Thereby, we fill a gap in a former proof of this fact, which used a wrong criterion. Furthermore, the subspace of fmm-spaces, which is dense and not closed, is investigated in detail. We show that there exists a metric that induces the marked Gromov-weak topology on this subspace and is complete. Therefore, the space of fmm-spaces is a Polish space. We also construct a decomposition into closed sets which are related to the case of uniformly equicontinuous mark functions.
影响因子:
2
作者:
A. Greven;P. Pfaffelhuber;A. Winter
通讯作者:
A. Winter
影响因子:
1.4
作者:
S. Kliem;A. Winter
通讯作者:
A. Winter