Interval-Valued and Circular Intuitionistic Fuzzy Present Worth Analyses

Present worth (PW) analysis is an important technique in engineering economics for investment analysis. The values of PW parameters such as interest rate, first cost, salvage value and annual cash flow are generally estimated including some degree uncertainty. In order to capture the vagueness these parameters, fuzzy sets often used literature. this study, we introduce interval-valued intuitionistic circular handle impreciseness estimation parameters. Circular latest extension defining uncertainty membership non-membership degrees through a circle whose radius r. Thus, develop new extensions functions. methods given step by application water treatment device purchasing at local municipality illustrated show their applicability. addition, multi-parameter sensitivity given. Finally, discussions suggestions future research conclusion section.