A lower estimate of harmonic functions

Document Type : Research Paper


1 Beijing National Day School

2 Department of Mathematics and Information Science, Henan University of Economics and Law, Zhengzhou, People's Republic of China

3 School of Mathematical Science, Beijing Normal University, Beijing, People's Republic of China.


We shall give a lower estimate of harmonic‎ ‎functions of order greater than one in a half space‎, ‎which‎
‎generalize the result obtained by B‎. ‎Ya‎. ‎Levin in a half plane‎.


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