This paper studies a perishable inventory model, which assumes that each perishableitem has finite lifetime, and only one item is consumed each time. The lifetimes ofperishable items are independent random variables with the general distribution and so arethe consumption internal. Under this assumption, by using backward equations and limitdistribution of Markov skeleton processes, this paper obtains the existence conditions andthe explicit expression of the limit distribution of the inventory level of perishable inventorymodel.
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