. We use deficit functions (DF) to decompose an aviation schedule of aircraft flights into aircraft chains (routes) called … circulating along the airports of this set. The initial step in our approach is to find the minimal number of aircraft needed to … carry out the flight schedule. This is achieved by using the fleet size theorem based on a DF representation of an aircraft …

Warren Buffett famously commented that the US airline industry had made zero profit in its first nine decades …. Subsequently, between the millennium and the Great Financial Crisis the airlines in total lost almost $60bn. Yet no major airline … relationship between GE and airlines. It outlines the benefits or costs to GE, airline shareholders, and passengers; the relevance …