7 PLEASE EXPLAIN ALL STEPS11. (10 - medium) (PDA) Design PDA for L = {wcw“|uw e {a,b}*}.12. (5 - advanced) (Comprehensive). Working backwards, write a few steps for prov-ing the following theorem. Ideally, you can reach the step how the PDA is con-structed.Theorem. For every context free language L, there exists a push down automatonM, L is accepted by a PDA.A more “normal" statement is like "Every context free language is accepted by aPDA." You are expected to reformulate such statement into the statement abovewhere all logical symbols are explicit and which helps produce a proof (and thusthe statement is indeed true).

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11. (10 - medium) (PDA) Design PDA for L = {wcw“|w € {a,b}*}. %3D

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Concept of memory addresses in pointers

The concept of pointers in high-level languages was introduced in C programming. Pointers are simply the variables that are used to store memory addresses of another variable. These special variables are generally used in the languages such as C Programming and C++ Programming, where it allows the programmer to work more deeply with memory and its addresses.

Question

PLEASE EXPLAIN ALL STEPS
11. (10 - medium) (PDA) Design PDA for L = {wcw“|uw e {a,b}*}.
12. (5 - advanced) (Comprehensive). Working backwards, write a few steps for prov-
ing the following theorem. Ideally, you can reach the step how the PDA is con-
structed.
Theorem. For every context free language L, there exists a push down automaton
M, L is accepted by a PDA.
A more “normal" statement is like "Every context free language is accepted by a
PDA." You are expected to reformulate such statement into the statement above
where all logical symbols are explicit and which helps produce a proof (and thus
the statement is indeed true).

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