Dido, Queen of Carthage (play) city. Aeneas was on his way to Italy, but is now lost in a storm. Jupiter tells her not to worry; he will quiet the storm. Venus travels to Libya, where she disguises herself as a mortal and meets Aeneas, who has arrived, lost, on the coast. He and a few followers have become separated from their comrades. He recognises her, but she denies her identity. She helps him meet up with Illioneus, Sergestus and Cloanthes, other surviving Trojans who have already received generous hospitality from the local ruler Dido, Queen of Carthage. Dido meets Aeneas and promises to supply
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