This note gives a simple proof that in a (r, q) system the average outstanding backorders andthe average stockouts per unit time are jointly convex in the two control variables q and r.
Green, Linda, Peter Kolesar, and Hongtao Zhang. "A note on the convexity of service-level measures of the (r, q) system." Management Science 44, no. 3 (March 1998): 431-432.
Each author name for a Columbia Business School faculty member is linked to a faculty research page, which lists additional publications by that faculty member.
Each topic is linked to an index of publications on that topic.