School of Mathematical Sciences, Fudan University, Shanghai 200433, China
Abstract:
For first-order quasilinear hyperbolic systems with zeroeigenvalues, the author establishes the local exact controllabilityin a shorter time-period by means of internal controls acting onsuitable domains. In particular, under certain special butreasonable hypotheses, the local exact controllability can berealized only by internal controls, and the control time can bearbitrarily small.