(a) Exhibit a derivation of the string aaaa using the following phrase structured grammar: S → YZY Z → BZC | E ВС + Сав Ва — ав аС — Са BY → Y ҮС — Y (b) Find a match for the following instance of the Post Correspondence Problem (PCP): {一重平亚 aaa b а a bb

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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(a) Exhibit a derivation of the string aaaa using the following phrase structured grammar:
S → YZY
Z → BZC| E
ВС Сав
Ва — ав
аС — Са
BY → Y
ҮС — Y
Y → E
(b) Find a match for the following instance of the Post Correspondence Problem (PCP):
{=}
{三目圖}
b
a
bb
Transcribed Image Text:(a) Exhibit a derivation of the string aaaa using the following phrase structured grammar: S → YZY Z → BZC| E ВС Сав Ва — ав аС — Са BY → Y ҮС — Y Y → E (b) Find a match for the following instance of the Post Correspondence Problem (PCP): {=} {三目圖} b a bb
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