In this paper, firstly we find an optimal constant for a convolution problem on the unit circle via the variational method. Then by using the optimal constant, we give a new and improved sufficient condition on the initial data to guarantee the corresponding strong solution blows up in finite time. We also analyze the corresponding ordinary difference equation associate to the convolution problem and give numerical simulation for the optimal constant.
Cite this article
Liangbing Jin, Yongming Liu, Yong Zhou, Blow-up of solutions to a periodic nonlinear dispersive rod equation. Doc. Math. 15 (2010), pp. 267–283DOI 10.4171/DM/298