Inventory model for instantaneous deteriorating items with time sensitive demand for post COVID-19 recovery

The Covid-19 epidemic has caused substantial obstacles to the supply network globally. Hence there is urgency and necessity build a model for cash flow in chain of demand system. This research suggests an inventory assist retailers determining optimal ordering quantity replenishment cycle reduce total cost different payment cases. current study looks toward partial advance delays system considering time-sensitive demand, shortage, backlogging instantaneous deteriorating items. During financial crisis, delay-in-payment strategy planned keep orders flowing from suppliers customers retailers. impact advanced delayed payments on retailer examined. To exemplify model?s application, numerical examples are used. A sensitivity critical parameters been done identify more sensitive which reveal clear depiction present problems.