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arxiv: 0809.3471 · v2 · pith:ZWVTCINJnew · submitted 2008-09-19 · 🧮 math.AP

Global rough solutions to the cubic nonlinear Boussinesq equation

classification 🧮 math.AP
keywords boussinesqcubicequationnonlineardefocusingglobalgloballyinitial
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We prove that the initial value problem (IVP) for the cubic defocusing nonlinear Boussinesq equation $u_{tt}-u_{xx}+u_{xxxx}-(|u|^2u)_{xx}=0$ on the real line is globally well-posed in $H^{s}(\R)$ provided $2/3<s<1$.

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