Abstract
Let us consider the renewal equation where z(x) and the proper probability distribution F(x) on (0,∞) are given. Let µ = ∫0 x dF(x), the case µ = ∞ is not excluded. Then the following theorem is equivalent to the renewal theorem (see Feller [2]). Theorem 1.1. If z is directly Riemann integrable and F is not arithmetic, then . The defective renewal equation is of great importance for applications. There L(x) is a defective probability distribution, L < 1. We have (see [2]) Theorem 1.2. If z(∞) = lim z(x), x → ∞, exists, then .

This publication has 0 references indexed in Scilit: