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On Some Curves in Minkowski 3-Space and Its Deformation Retract

A. E. El-Ahmady, E. AL-Hesiny


Gumbel distributed deterioration items with applications to optimal control theory. We successfully formulated the model as a linear optimal control problem and obtained an explicit solution using Pontryagin maximum principle. The optimality conditions are derived in this case. It is then illustrated with the help of examples.


Inventory-production model, Optimal control, Perishable items, Gumbel distribution, Sensitivity analysis.

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