Resumen de The internal rate of return of fuzzy cash flows.

Loredana Biacino, M. Rosaria Simonelli

• An internal rate of return (IRR) of an investment or financing project with cash flow (a0,a1,a2,...,an) is usually defined as a rate of interest r such that a0 + a1(1 + r)-1 + ... + an(1 + r)-n = 0.

  If the cash flow has one sign change then the previous equation has a unique solution r > -1.

  Generally the IRR technique does not extend to fuzzy cash flows, as it can be seen with examples (see [2]). In this paper we show that under suitable hypothesis a unique fuzzy IRR exists for a fuzzy cash flow.