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Aug 22, 2014 at 2:52 vote accept PDELearner
Aug 21, 2014 at 9:23 comment added Piero D'Ancona The estimates for Klein-Gordon are more complex. However all cases which are true for the wave equation are also true for KG, only you must replace homogeneous norms with nonhomogeneous ones.
Aug 20, 2014 at 17:57 comment added PDELearner Thank you for your helpful comment. I see now how they're getting the exponents, though I'm still confused about the $\square u+u$ term on the right hand side.
Aug 20, 2014 at 14:29 history edited Piero D'Ancona CC BY-SA 3.0
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Aug 20, 2014 at 8:56 history answered Piero D'Ancona CC BY-SA 3.0