Chomsky Normal Form

Question 1

What is a lambda-production rule?
When is a variable erasable? How can this be computed?

Answer 1

Question 2

How can context free languages remove lambda-rules from their grammar?

Answer 2

Question 3

What is a unit production rule? How can they be removed?

Answer 3

Question 4

What is the Chomsky Normal Form? What is special about this form?

Answer 4

Question 5

How can a context-free language be transformed into Chomsky Normal Form?

Answer 5