Regular Grammar - Extended Regular Grammars

Extended Regular Grammars

An extended right regular grammar is one in which all rules obey one of

  1. B → a - where B is a non-terminal in N and a is a terminal in Σ
  2. A → wB - where A and B are in N and w is in Σ*
  3. 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

  1. A → a - where A is a non-terminal in N and a is a terminal in Σ
  2. A → Bw - where A and B are in N and w is in Σ*
  3. 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

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