In finance, an interest rate cap is a type of interest rate derivative in which the buyer receives payments at the end of each period in which the interest
and of Tom Brown and Joe Buhler, who in 1984 proved that cap-sets cannot constitute any constant proportion of the whole space, there has been a significant
functions of intervals. Informally speaking, a step function is a piecewise constant function having only finitely many pieces. A function f : R → R {\displaystyle