Chen, Liang-Ho; Ouyang, Liang-Yuh Fuzzy inventory model for deteriorating items with permissible delay in payment. (English) Zbl 1120.90301 Appl. Math. Comput. 182, No. 1, 711-726 (2006). Summary: We extend the model of A. M. M. Jamal, B. R. Sarker and S. Wang [J. Oper. Res. Soc. 48, No. 8, 826–833 (1997; Zbl 0890.90049)] by fuzzifying the carrying cost rate, interest paid rate and interest earned rate simultaneously, based on the interval-valued fuzzy numbers and triangular fuzzy number to fit the real world. We then prove that the estimate of total variable cost per unit time in the fuzzy sense is a strictly pseudo-convex function. As a result, there exists a unique optimal solution to our proposed model. Moreover, we apply the Jamal et al. example to show the results and to compare with the Jamal et al. model. Cited in 13 Documents MSC: 90B05 Inventory, storage, reservoirs 03E72 Theory of fuzzy sets, etc. Keywords:fuzzy inventory; interval-valued fuzzy number; permissible delay in payment; signed distance; triangular fuzzy number Citations:Zbl 0890.90049 PDF BibTeX XML Cite \textit{L.-H. Chen} and \textit{L.-Y. Ouyang}, Appl. Math. Comput. 182, No. 1, 711--726 (2006; Zbl 1120.90301) Full Text: DOI References: [1] Aggarwal, S. P.; Jaggi, C. K., Ordering policies of deteriorating items under permissible delay in payments, Journal of the Operational Research Society, 46, 658-662 (1995) · Zbl 0830.90032 [2] Bazarra, M.; Sherali, H.; Shetty, C. M., Nonlinear Programming (1993), Wiley: Wiley New York [3] Chang, H. C., An application of fuzzy sets theory to the EOQ model with imperfect quality items, Computers & Operations Research, 31, 2079-2092 (2004) · Zbl 1100.90500 [4] Chang, H. C.; Yao, J. S.; Ouyang, L. 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