Abstract
Recently, the authors showed how interest randomness in actuarial functions can· be described by means of Wiener processes using path integrals. This paper wants to present an extension of this kind of models, by investigating the situation of interest rates that cannot become negative. The case of an annuity certain and in particular that of a perpetuity will be dealt with in detail.
Research sponsored by OT/93/5.
Research sponsored by OT/93/5.
Notes
Research sponsored by OT/93/5.