Transition function of a Pushdown Automaton maps a 3-tuple (q,A,B) to a 2-tuple (p,C), where 'q' is the state before the transition, and 'p' is the state after the transition. A belongs to the input alphabet of the automaton. After we reach to the state 'p', what is the element that is located on the top of the stack? How about when we were in state 'q', what was the element on the top of the stack? What operation are you doing on the stack: First then

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Chapter1: Introduction
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Automata and computation!

Transition function of a Pushdown
Automaton maps a 3-tuple (q,A,B)
to a 2-tuple (p,C), where 'q' is the
state before the transition, and 'p' is
the state after the transition. A
belongs to the input alphabet of the
automaton. After we reach to the
state 'p', what is the element that is
located on the top of the stack?
How about
when we were in state 'q', what was
the element on the top of the stack?
What operation are you doing on
the stack: First
then
Transcribed Image Text:Transition function of a Pushdown Automaton maps a 3-tuple (q,A,B) to a 2-tuple (p,C), where 'q' is the state before the transition, and 'p' is the state after the transition. A belongs to the input alphabet of the automaton. After we reach to the state 'p', what is the element that is located on the top of the stack? How about when we were in state 'q', what was the element on the top of the stack? What operation are you doing on the stack: First then
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