%0 Journal Article
%T Positivity of the Bondi mass in Bondi's radiating spacetimes
%A Wen-ling Huang
%A Shing Tung Yau
%A Xiao Zhang
%J Mathematics
%D 2006
%I arXiv
%X We find two conditions related to the {\it news functions} of the Bondi's radiating vacuum spacetimes. We provide a complete proof of the positivity of the Bondi mass by using Schoen-Yau's method under one condition and by using Witten's method under another condition.
%U http://arxiv.org/abs/math/0604155v2