Abstract
We study the propagation of singularities for nonlinear wave equation . Our main result in this paper is Theorem 1.1, which is an extension of Theorem 2.7 in [2]. When the nonlinearity satisfies the null condition, we improve a condition with respect to regularity of solutions .
Acknowledgements
I would like to thank Professor Keiichi Kato and Professor Hikosaburo Komatsu for a number of comments, suggestions, and constant support. Thanks are also due to Professor Mutsuo Oka for his comment on Proposition 3.2 and his kind advice.
Citation
Shingo Ito. "Propagation of singularities for semilinear wave equation with nonlinearity satisfying null condition." SUT J. Math. 41 (2) 197 - 204, June 2005. https://doi.org/10.55937/sut/1159987098
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