Guantie Deng

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

[ 1 ] - A lower estimate of harmonic functions

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.

Co-Authors