Optimal control of a class of linear nonautonomous parabolic PDE via two-parameter semigroup representation

Author(s):  
James Ng ◽  
Stevan Dubljevic ◽  
Ilyasse Aksikas
1986 ◽  
Vol 26 (1) ◽  
pp. 77-87
Author(s):  
Ata Al-Hussaini ◽  
R. J. Elliott

2005 ◽  
Vol 2005 (22) ◽  
pp. 3539-3550
Author(s):  
Liu Wei-an ◽  
Lu Gang

By the technique of coupled solutions, the notion of viscosity solutions is extended to fully nonlinear retarded parabolic equations. Such equations involve many models arising from optimal control theory, economy and finance, biology, and so forth. The comparison principle is shown. Then the existence and uniqueness are established by the fixed point theory.


2016 ◽  
Vol 13 (05) ◽  
pp. 1650028 ◽  
Author(s):  
Benxue Gong ◽  
Tongjun Sun ◽  
Wanfang Shen ◽  
Wenbin Liu

A stochastic Galerkin approximation scheme is proposed for an optimal control problem governed by a parabolic PDE with random perturbation in its coefficients. The objective functional is to minimize the expectation of a cost functional, and the deterministic control is of the obstacle constrained type. We obtain the necessary and sufficient optimality conditions and establish a scheme to approximate the optimality system through the discretization with respect to both the spatial space and the probability space by Galerkin method and with respect to time by the backward Euler scheme. A priori error estimates are derived for the state, the co-state and the control variables. Numerical examples are presented to illustrate our theoretical results.


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