表題番号:2016B-168 日付:2017/04/12
研究課題非線形放物型方程式に軸足を置いた非線形偏微分方程式の総合的研究
研究者所属(当時) 資格 氏名
(代表者) 理工学術院 先進理工学部 教授 大谷 光春
(連携研究者) 応用物理学科 助教 内田 俊
研究成果概要

The following results are achieved under this grant.

(1) Study on the applications of “L-infinity Energy Method” to nonlinear partial differential equations:

   We applied L-infinity Energy Method to the system of parabolic equations which describes a diffusion-convection prey-predator model which takes into account of the hysteresis effects. Because of the strong nonlinearity of this system, we needed to improve some tools to establish a priori estimates for the L-infinity norm of solutions, by which we could ameliorate previous studies.

(2) Study on complex Ginzburg-Landau equations (CGLE):

  (i) For the non-dissipative system in bounded domains, we proved the existence and the uniqueness of time-local solutions for CGLE in H^1-space.

  (ii) We analyzed the finite-time blow-up of solutions of CGLE.

The previous studies dealt with the case where the energy of the initial data is negative in the whole domain.

We developed a new method to treat the case where the energy of the initial data is positive in general domains.

(3) Study on the mathematical analysis for the   mitochondrial  swelling   model:  

   We analyzed this model with Robin-type boundary conditions, which describes well the real situation of mitochondria in cells. We showed the well posedness of the system as well as the asymptotic behavior of solutions.