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Minimal-dimension conjecture for a multi-symplectic structure of the KdV–BBM equation
Minimal-dimension conjecture. Another multi-symplectic structure for this equation in $\mathds{R}^{d}$ , with $d<5$ , is not possible.
Conjectureopenboussinesq-equations multi-symplectic-geometry partial-differential-equationsarXiv posted 2 days ago

Minimal-dimension conjecture for a multi-symplectic structure of the KdV–BBM equation