Published online by Cambridge University Press: 14 July 2016
In a previous paper, [1] it was shown that a solution, f(x) will exist for the optimal inventory equation (where f(y − z) = f(0), y < z) provided:
1. g(x) ≧ 0, x ≧ 0;
2. 0 < a < 1;
3. h(x) is monotonically nondecreasing, h(0) = 0;
4. F is a distribution function on [0, ∞);
(In [1], 1–4 were denoted collectively as (A).)
and either
5a. g(x) is continuous for all x ≧ 0;
5b. limx→∞g(x) = ∞;
5c h(x) is continuous for all x > 0 (Theorem 2 of [1]);
or
6. g(x) is uniformly continuous for all x ≧ 0 (Theorem 3 of [1]).