Context-Free Languages Regular Languages } 0 : { > n b a n n } { R ww * *b a * ) ( b a + Regular Languages } { n n b a } { R ww Context-Free Languages Context-Free Languages…

Slide 1 1 Grammars Slide 2 2 Grammars express languages Example: the English language Slide 3 3 Slide 4 4 A derivation of “the boy walks”: Slide 5 5 A derivation of “a…

Slide 1 Fall 2005Costas Busch - RPI1 Context-Free Languages Slide 2 Fall 2005Costas Busch - RPI2 Regular Languages Slide 3 Fall 2005Costas Busch - RPI3 Regular Languages…

Slide 1 Context-Free Languages Hinrich Schütze CIS, LMU, 2013-11-25 Slides based on RPI CSCI 2400 Thanks to Costas Busch Slide 2 Take-away Definition context-free grammar…

Context-Free Languages Regular Languages Regular Languages Context-Free Languages Context-Free Languages Pushdown Automata Context-Free Grammars stack automaton Context-Free…

Reverse of a Regular Language Theorem: The reverse of a regular language is a regular language Proof Since is regular, there is NFA that accepts Example: Invert Transitions…