In 1946, the mathematician Paul Erdős posed the unit distance problem—and suggested a winning strategy. An A.I. model has now ...

Abstract: This paper explores a novel model for sorted-waste transportation, defined as the two-echelon collaborative location routing problem with intuitionistic fuzzy multi-demands. It considers a ...

Aaron Brown is a former head of financial market research at AQR Capital Management. An active crypto investor, he has venture capital investments and advisory ties with crypto firms. He is the author ...

The Pittsburgh Steelers have been regarded as having one of the better offseasons among the 32 NFL teams. But with still plenty of time until the beginning of the 2026 season, they could always make ...