PDA TO CFG | PYQ 2023-24 | AKTU | TAFL |

Описание: in this video i have explained the previous year questions of the topic "PDA To CFG" from the subject theory of automata and formal languages (tafl).
the question which is covered in this video comes as a long question of 7 marker in the aktu semester examination in the subject tafl for btech aktu 2nd year students of 4th sem.
this is a highly important topic and question to be preapared for scoring a good mark in the subject of theory of automata and formal languages.


Regular and Non-Regular Grammars: Context Free Grammar(CFG)-Definition, Derivations,
Languages, Derivation Trees and Ambiguity, Regular Grammars-Right Linear and Left Linear
grammars, Conversion of FA into CFG and Regular grammar into FA, Simplification of CFG, Normal
Forms- Chomsky Normal Form(CNF), Greibach Normal Form (GNF), Chomsky Hierarchy,
Programming problems based on the properties of CFGs.

Push Down Automata and Properties of Context Free Languages: Nondeterministic Pushdown
Automata (NPDA)- Definition, Moves, A Language Accepted by NPDA, Deterministic Pushdown
Automata(DPDA) and Deterministic Context free Languages(DCFL), Pushdown Automata for
Context Free Languages, Context Free grammars for Pushdown Automata, Two stack Pushdown
Automata, Pumping Lemma for CFL, Closure properties of CFL, Decision Problems of CFL,
Programming problems based on the properties of CFLs.

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