Extended Regular Grammars
An extended right regular grammar is one in which all rules obey one of
- B → a - where B is a non-terminal in N and a is a terminal in Σ
- A → wB - where A and B are in N and w is in Σ*
- A → ε - where A is in N and ε is the empty string.
Some authors call this type of grammar a right regular grammar (or right linear grammar) and the type above a strictly right regular grammar (or strictly right linear grammar).
An extended left regular grammar is one in which all rules obey one of
- A → a - where A is a non-terminal in N and a is a terminal in Σ
- A → Bw - where A and B are in N and w is in Σ*
- A → ε - where A is in N and ε is the empty string.
Some authors call this type of grammar a left regular grammar and the type above a strictly left regular grammar.
Read more about this topic: Regular Grammar
Famous quotes containing the words extended, regular and/or grammars:
“No: until I want the protection of Massachusetts to be extended to me in some distant Southern port, where my liberty is endangered, or until I am bent solely on building up an estate at home by peaceful enterprise, I can afford to refuse allegiance to Massachusetts, and her right to my property and life. It costs me less in every sense to incur the penalty of disobedience to the State than it would to obey. I should feel as if I were worth less in that case.”
—Henry David Thoreau (1817–1862)
“He hung out of the window a long while looking up and down the street. The world’s second metropolis. In the brick houses and the dingy lamplight and the voices of a group of boys kidding and quarreling on the steps of a house opposite, in the regular firm tread of a policeman, he felt a marching like soldiers, like a sidewheeler going up the Hudson under the Palisades, like an election parade, through long streets towards something tall white full of colonnades and stately. Metropolis.”
—John Dos Passos (1896–1970)
“A sure proportion of rogue and dunce finds its way into every school and requires a cruel share of time, and the gentle teacher, who wished to be a Providence to youth, is grown a martinet, sore with suspicions; knows as much vice as the judge of a police court, and his love of learning is lost in the routine of grammars and books of elements.”
—Ralph Waldo Emerson (1803–1882)