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
Related questions
Question
![(а)
/bd\
cd
ad
(b)
се
се
ae
af
ac
(2)
de
(3)
(4)
(5)
df
(6)
PP/
(1)
Figure 1: (a) A map where the cost of every edge is 1. Initially the pursuer P is at node b
and the evader E is at node d. (b) A partial game tree for this map. Each node is labeled
with the P, E positions. P moves first.
2. True or False?
(a)
(A ^ B) = (A + B)
(C V (¬A^ ¬B)) = ((A→C) ^ (B → C))
(A V B) ^ (¬C V ¬D V E) = (A V B)
(A V B) ^ ¬(A =→ B) is satisfiable.
(b)
(c)
3.
Prove using Venn diagram, or find a counterexample to the following as-
sertion:
a F (B^^) then a = ß and a =](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F228fb672-2edf-4322-b309-09a8cc1b4954%2Fffdfb334-15aa-4185-8916-f658777ee98e%2Fvwq9irc_processed.png&w=3840&q=75)
Transcribed Image Text:(а)
/bd\
cd
ad
(b)
се
се
ae
af
ac
(2)
de
(3)
(4)
(5)
df
(6)
PP/
(1)
Figure 1: (a) A map where the cost of every edge is 1. Initially the pursuer P is at node b
and the evader E is at node d. (b) A partial game tree for this map. Each node is labeled
with the P, E positions. P moves first.
2. True or False?
(a)
(A ^ B) = (A + B)
(C V (¬A^ ¬B)) = ((A→C) ^ (B → C))
(A V B) ^ (¬C V ¬D V E) = (A V B)
(A V B) ^ ¬(A =→ B) is satisfiable.
(b)
(c)
3.
Prove using Venn diagram, or find a counterexample to the following as-
sertion:
a F (B^^) then a = ß and a =
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