Sport in the United Arab Emirates Dubai Autodrome, opened in 2007, hosted international races in it first years of activity. Its main race is the Dubai 24 Hour endurance race, held since 2009 Abu Dhabi has hosted Formula One races there from the 2009 season onward. The Abu Dhabi Grand Prix is held at the 5.6 km Yas Marina Circuit, located on Yas Island and includes street and marina sections similar to Circuit de Monaco. The UAE hosts Dubai Sevens round of the IRB Sevens World Series. Previously this was held at Dubai Rugby Ground, but from 2008 onwards it has been held at the new
Boolean circuit "m" nodes which are labeled as the outputs. The edges must also have some ordering, to distinguish between different arguments to the same Boolean function. As a special case, a propositional formula or Boolean expression is a Boolean circuit with a single output node in which every other node has fan-out of 1. Thus, a Boolean circuit can be regarded as a generalization that allows shared subformulas and multiple outputs. A common basis for Boolean circuits is the set {AND, OR, NOT}, from which all other Boolean functions can be constructed. The Circuit Value Problem, the problem of computing the