Abstract:
We analyze bilinear estimates related to periodic KP-I type equations. We prove that the Cauchy problem for the fifth order KP-I equation, posed on ?×ℝ, is globally well-posed in the energy space. Despite the loss of a smoothing relation (which is essential to recuperate the derivative loss), used in the context of the KdV and KP-II type equations, we are able to gain a moothing thanks to some specific properties of the set of Fourier modes where the smoothing relation fails. Counterexamples in the context of KP-I type equations posed on ?×? are given. These examples indicate that contrary to the KP-II case it would be difficult to obtain the local well-posedness for the periodic KP-I type equations by an iteration scheme using Bourgain spaces.
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Received: 30 November 2000 / Accepted: 6 March 2001
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Saut, JC., Tzvetkov, N. On Periodic KP-I Type Equations. Commun. Math. Phys. 221, 451–476 (2001). https://doi.org/10.1007/PL00005577
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DOI: https://doi.org/10.1007/PL00005577