Abstract: A minimum feedback arc set is, for a directed graph, a minimum set of arcs which if removed leaves the resultant graph free of directed loops. This paper establishes a relationship between ...
This paper describes how heuristic information from the problem domain can be incorporated into a formal mathematical theory of graph searching and demonstrates an optimality property of a class of ...
In 2013, the Portuguese government offered foreign retirees relocating to Portugal a 10-year tax exemption on their foreign-source pension income, provided their country of origin had a tax treaty ...
The full moon names for each month, why they're named so and what we can expect from these lunar events. Many full moon names date back to Native Americans, of what is now the northern and eastern ...
Here are the dates for the full moons in 2025. The next full moon will be on Monday, Jan. 13, 2025. It will officially reach its full moon phase at 5:27 P.M. EST (2227 GMT) but local moonrise ...
The current international financial architecture is a key reason that the UN Sustainable Development Goals are failing. A landmark conference in Spain must make progress in reforming it.