Partial regularity and smooth topology-preserving approximations of rough domains
Partial regularity and smooth topology-preserving approximations of rough domains
复制标题
粗糙域的部分正则性和光滑拓扑保持近似
DOI:
10.1007/s00526-016-1092-6
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发表时间:
2017
影响因子:
2.1
通讯作者:
Ball J
中科院分区:
文献类型:
--
作者:
Ball J
For a bounded domainof class, the properties are studied of fields of ‘good directions’, that is the directions with respect to whichcan be locally represented as the graph of a continuous function. For any such domain there is a canonical smooth field of good directions defined in a suitable neighbourhood of, in terms of which a corresponding flow can be defined. Using this flow it is shown thatcan be approximated from the inside and the outside by diffeomorphic domains of class. Whether or not the image of a general continuous field of good directions (pseudonormals) defined onis the whole ofis shown to depend on the topology of. These considerations are used to prove that if, or ifhas nonzero Euler characteristic, there is a pointin the neighbourhood of whichis Lipschitz. The results provide new information even for more regular domains, with Lipschitz or smooth boundaries.
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影响因子:
2.5
作者:
Mahir Hadžić;S. Shkoller
通讯作者:
S. Shkoller
影响因子:
0.7
作者:
Andrew J. S. Hamilton
通讯作者:
Andrew J. S. Hamilton
影响因子:
1.8
作者:
L. Fraenkel
通讯作者:
L. Fraenkel
影响因子:
2.5
作者:
J. Ball;A. Zarnescu
通讯作者:
J. Ball;A. Zarnescu
DOI:
10.1142/3197
发表时间:
1998
期刊:
Journal de Mathématiques Pures et Appliquées
影响因子:
--
作者:
V. Maz'ya;S. Poborchi
通讯作者:
S. Poborchi