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      Lecture 4: Pushdown Automata, CFG ↔ PDA
Description: Quickly reviewed last lecture. Defined context free grammars (CFGs) and context free languages (CFLs). Defined pushdown automata (PDA). Gave conversion of CFGs to PDAs. Stated the reverse conversion without proof.
Instructor: Prof. Michael Sipser
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            Fall
            
              2020
            
          
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