A note on fuzzy inventory model with storage space and budget constraints

In 1997, Roy and Maiti developed a fuzzy EOQ model with fuzzy budget and storage capacity constraints where demand is influenced by the unit price and the setup cost varies with the quantity purchased [T.K. Roy, M. Maiti, A fuzzy EOQ model with demand-dependent unit cost under limited storage capacity, Eur. J. Oper. Res. 99 (1997) 425-432]. However, their procedure has some questionable points and their numerical examples contain rather peculiar results. The purpose of this paper is threefold. First, for the same inventory model with fuzzy constraints, based on the max-min operator, we proposed all improved Solution procedure. Second, we review the solution procedure by Roy and Maiti that is based on Kuhn-Tucker approach to point Out their questionable results. Third, we compare Roy and Maiti's approach with ours to explain why our approach can solve the problem and theirs cannot. Numerical examples provided by them also support our findings. (C) 2009 Elsevier Inc. All rights reserved