A note on the lifespan of solutions to the semilinear wave equation with weighted nonlinearity
arxiv(2024)
摘要
We investigate the lifespan of solutions to a specific variant of the
semilinear wave equation, which incorporates weighted nonlinearity
u_tt-u_xx =|x|^α |u|^p, (t,x)∈
(0,∞)×ℝ,
where p>1, α∈ℝ. We explore
the behavior of solutions for small initial data, considering the influence of
weighted nonlinearities on the lifespan.
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