There is an interesting way to get the negation (complement) of a regular language L defined by a FS automaton, provided the automaton is ε-free.

Overfired grills, or salamanders, can, in addition, be used for making toast and salamandering. They have the heat source above the food …. This may comprise sets of burners firing below refractory or metal frets, or surface combustion plaques.

Despite his fame, he's a humble, laid-back guy, more than willing to teach me a thing or two about minigolf.

a taxing problem