WANG Jianming, FENG Zhaoyong, LIU Chengxia. Weak well-posedness for a Degasperis-Procesi equation[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2018,57(4):86-91.
WANG Jianming, FENG Zhaoyong, LIU Chengxia. Weak well-posedness for a Degasperis-Procesi equation[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2018,57(4):86-91.DOI:
The weak well-posedness is obtained for the Cauchy problem of the Degasperis-Procesi equation with the initial value
u
0
∈H
1
(
R
)∩
W
1,∞
(
R
). At first,by introducing the characteristics,the Cauchy problem of the Degasperis-Procesi equation is transformed into an ODE system. By using the ODE theory,the local existence and uniqueness of the solution to the ODE system is proved. Finally,the unique solution is investigated for the original equation by the relationship between the original equation and the ODE system,and the weak continuous dependence on initial conditions to the original equation is given.