Real-part theorems;
multidimensional harmonic functions;
estimates of the gradient;
Khavinson's problem;
D O I:
10.3934/dcds.2010.28.425
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
A representation of the sharp constant in a pointwise estimate of the gradient of a harmonic function in a multidimensional half-space is obtained under the assumption that function's boundary values belong to L(p). This representation is concretized for the cases p = 1,2, and infinity.
机构:
Univ Roma La Sapienza, Dept Math G Castelnuovo, Ple Aldo Moro 2, I-00185 Rome, ItalyUniv Roma La Sapienza, Dept Math G Castelnuovo, Ple Aldo Moro 2, I-00185 Rome, Italy
Aspri, Andrea
Beretta, Elena
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机构:
Politecn Milan, Dept Math, Via Edoardo Bonardi, I-20133 Milan, ItalyUniv Roma La Sapienza, Dept Math G Castelnuovo, Ple Aldo Moro 2, I-00185 Rome, Italy
Beretta, Elena
Mascia, Corrado
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h-index: 0
机构:
Univ Roma La Sapienza, Dept Math G Castelnuovo, Ple Aldo Moro 2, I-00185 Rome, ItalyUniv Roma La Sapienza, Dept Math G Castelnuovo, Ple Aldo Moro 2, I-00185 Rome, Italy