On Local Well-posedness of the Periodic Korteweg-de Vries Equation Below
$H^{-\frac{1}{2}}(\mathbb{T})$
On Local Well-posedness of the Periodic Korteweg-de Vries Equation Below
$H^{-\frac{1}{2}}(\mathbb{T})$
We utilize a modulation restricted normal form approach to establish local well-posedness of the periodic Korteweg-de Vries equation in $H^s(\mathbb{T})$ for $s> -\frac23$. This work creates an analogue of the mKdV result by Nakanishi, Takaoka, and Tsutsumi for KdV, extending the currently best-known result of $s \geq -\frac12$ without utilizing …