51 citations · 115 across the 8 of their papers we have counts for
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math.AP2019★ 1 cited
Global existence for a system of multiple-speed wave equations violating the null condition
Kunio Hidano, Kazuyoshi Yokoyama, Dongbing Zha
We discuss the Cauchy problem for a system of semilinear wave equations in three space dimensions with multiple wave speeds. Though our system does not satisfy the standard null co…
math.AP2019
Global existence for null-form wave equations with data in a Sobolev space of lower regularity and weight
Kunio Hidano, Kazuyoshi Yokoyama
Assuming initial data have small weighted norm, we prove global existence of solutions to the Cauchy problem for systems of quasi-linear wave equations in three spa…