Cancellation properties and unconditional well-posedness for fifth order modified KdV type equations with periodic boundary conditions

Fuente: arXiv
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Main Authors: Kato, Takamori, Tsugawa, Kotaro
Format: Preprint
Published: 2025
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author Kato, Takamori
Tsugawa, Kotaro
author_facet Kato, Takamori
Tsugawa, Kotaro
contents We prove the unconditional well-posedness result for fifth order modified KdV type equations in $H^s(\mathbb{T})$ when $s \geq 3/2$, which includes non-integrable cases. By the conservation laws, we also obtain the global well-posedness result when $s = 2$, which also includes non-integrable cases. The main idea is to employ the normal form reduction and a kind of cancellation properties to deal with the derivative losses.
format Preprint
id arxiv_https___arxiv_org_abs_2502_04007
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Cancellation properties and unconditional well-posedness for fifth order modified KdV type equations with periodic boundary conditions
Kato, Takamori
Tsugawa, Kotaro
Analysis of PDEs
We prove the unconditional well-posedness result for fifth order modified KdV type equations in $H^s(\mathbb{T})$ when $s \geq 3/2$, which includes non-integrable cases. By the conservation laws, we also obtain the global well-posedness result when $s = 2$, which also includes non-integrable cases. The main idea is to employ the normal form reduction and a kind of cancellation properties to deal with the derivative losses.
title Cancellation properties and unconditional well-posedness for fifth order modified KdV type equations with periodic boundary conditions
topic Analysis of PDEs
url https://arxiv.org/abs/2502.04007