codify a trihedral inventory control model in terms of inflation in state of non-allowed shortage for an incorruptible commodity

this research seeks to provide a mathematical model for a trihedral inventory control system. this three-level chain, including manufacturing, warehouse and seller. in situations where a specific product is produced under inflation and the impact of inflation with exponential function is on the price of units. also in this model demand rate, production rate and lead time are constant. in this model, shortage is non-allowed. with these hypotheses obtains total cost function and determine limitations  each of the decision variables then determine optimal order point by using matlab software.