期刊
JOURNAL OF DIFFERENTIAL EQUATIONS
卷 256, 期 2, 页码 558-576出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jde.2013.09.012
关键词
Bi-harmonic function; Frequency; Doubling condition; Nodal set; Measure estimate
类别
In this paper, we define a frequency for bi-harmonic functions. By using this frequency, we give the measure estimates of nodal sets of bi-harmonic functions. We also show that the frequency has some interesting properties similar to the frequency of harmonic functions. (C) 2013 Elsevier Inc. All rights reserved.
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