On Regularity of the Boundary in the Theory of Sobolev Spaces

On Regularity of the Boundary in the Theory of Sobolev Spaces
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论索博列夫空间理论中边界的正则性

DOI:
10.1112/plms/s3-39.3.385
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发表时间:
1979
影响因子:
1.8
通讯作者:
L. Fraenkel
L. Fraenkel
中科院分区:
数学1区
文献类型:
--
作者:
L. Fraenkel

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令x=(xlf...,xN)表示真实的i^维欧氏空间R^的点,其中N^ 2,具有范数|x\=(x± 2+.+ xN 2)*,设Q是R^中的(非空)开集;当Q也连通时,我们称它为区域。偏导数将用符号来表示,其中<x lt.,aN是非负整数且a=(a1}...,aN)是阶的多索引|一|= 0^+.+ ocN。Sobolev空间W™(Q.),其中m G {0,1,2,.}和pe [l,oo),由(a)复值函数的集合u:Q.-> C具有所有广义(或“分布”或“弱”或“强”)偏导数DHb,对于|一|^ m,在Lp(Q.)中;和(B)范数l/p
Let x=(xlf..., xN) denote points of the real i^-dimensional euclidean space R^, where N^ 2, with norm| x\=(x± 2+...+ xN 2)*, and let Q be a (non-empty) open set in R^; when Q, is also connected, we call it a region. Partial derivatives will be written in terms of the symbol where< xlt..., aN are non-negative integers and a=(a1}..., aN) is a multiindex of order| a|= 0^+...+ ocN. The Sobolev space W™(Q.), where m G {0, 1, 2,...} and pe [l, oo), consists of (a) the set of complex-valued functions u: Q.-> C having all generalized (or'distributional'or'weak'or'strong') partial derivatives DHb, for| a|^ m, in Lp (Q.); and (b) the norm l/p