Dido her grandfather, Baal-Eser II/Balazeros. Even more important than the inscriptional and literary references supporting the historicity of Pygmalion and Dido are chronological considerations that give something of a mathematical demonstration of the veracity of the major feature of the Pygmalion/Dido saga, namely the flight of Dido from Tyre in Pygmalion's seventh year, and her eventual founding of the city of Carthage. Classical authors give two dates for the founding of Carthage. The first is that of Pompeius Trogus, mentioned above, that says this took place 72 years before the foundation of Rome. At least as early as the 1st century
DIDO (software) in solving for the costates in optimal control problems. DIDO generates spectrally accurate solutions whose extremality can be verified using Pontryagin's Minimum Principle. Because no knowledge of pseudospectral methods is necessary to use it, DIDO is often used as a fundamental mathematical tool for solving optimal control problems. That is, a solution obtained from DIDO is treated as a candidate solution for the application of Pontryagin's minimum principle as a necessary condition for optimality. DIDO is used world wide in academia, industry and government laboratories. Thanks to NASA, DIDO was flight-proven in 2006. On November 5, 2006, NASA used DIDO