6. Write the parse trees for the following CTL formulas:(a) A[p U A[q U r]](b) E[A[p U q] U r](c) AG(p → A[p U ( ¬ p ^ A[ ¬p U q])]).7. Explain why the following are not well-formed CTL formulas:(a) A ¬G ¬p(b) F [r U q](c) EXXT(d) AEF r(e) AF [(r U q) (p U r)]8. State which of the strings below are well-formed CTL formulas. For those whichare well-formed, draw the parse tree. For those which are not well-formed,explain why not.(a) ¬ AXq(b) p U (AX1)(c) E[(AXq) U ( ¬(¬p) V(_^ s))](d) (F r) ^ (AGq)

A parse tree can be defined as an ordered, rooted tree that represents the syntactic structure of a…

Answered: 6. Write the parse trees for the…

6. Write the parse trees for the following CTL formulas: (a) A[p U A[qU r]] (b) E[A[p U q] U r] (c) AG(p → A[p U (¬p^ A[ ¬p U q])]).

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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Question

6. Write the parse trees for the following CTL formulas:
(a) A[p U A[q U r]]
(b) E[A[p U q] U r]
(c) AG(p → A[p U ( ¬ p ^ A[ ¬p U q])]).
7. Explain why the following are not well-formed CTL formulas:
(a) A ¬G ¬p
(b) F [r U q]
(c) EXXT
(d) AEF r
(e) AF [(r U q) (p U r)]
8. State which of the strings below are well-formed CTL formulas. For those which
are well-formed, draw the parse tree. For those which are not well-formed,
explain why not.
(a) ¬ AXq
(b) p U (AX1)
(c) E[(AXq) U ( ¬(¬p) V(_^ s))]
(d) (F r) ^ (AGq)

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