In complexity theory and computability theory, an oracle machine is an abstract machine used to study decision problems. It can be visualized as a Turing machine with a black box, called an oracle, which is able to solve certain decision problems in a single operation. The problem can be of any complexity class.
Sofia Carson is an American singer and actress. She played Chelsea in an episode of Austin and Ally, and played Evie in Descendants. She also played Lola Perez in Adventures in Babysitting.
Benjamin S. Carson, (1951- ), is a famous neurosurgeon who has performed more than 400 brain and spinal surgeries in one year. Born in Detroit, Michigan, Ben did not do well in school and performed so poorly that he was called dummy by his classmates. His mother Sonya, a single parent with only a third grade education, was the only provider for the family and reared Benjamin and his brother alone.