Optimal harvesting of a three species system with B-D functional responseand diffusion under age-structure
In this paper,the optimal harvesting issues of a three species system with B-D functional response and diffusion under age-structure is established.By using operator semigroup theory the existence,uniqueness,non-negative boundedness and continuous dependence of the solution of control variablesare proved;Then getting the optimal conditions of controlling issues by using technique of tangent-normal cones.
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