25. Use Algorithm 1 to find the transitive closures of these relations on {1, 2, 3, 4}. a) {(1, 2), (2, 1), (2, 3), (3, 4), (4, 1)}

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.7: Relations
Problem 11E: Let be a relation defined on the set of all integers by if and only if sum of and is odd. Decide...
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Hello. I am asking that all the work is shown on paper. I know the final answer is a 4 x 4 matrix containing all 1s. I'm just not getting that result. I have enclosed an example problem from the textbook that basically shows what I need to do. I'm having a hard time finding M2r, M3r, and M4r. Please show the work on how you get those. Help would be appreciated.

THEOREM 3
Let MR be the zero-one matrix of the relation R on a set with n elements. Then the zero-one
matrix of the transitive closure R* is
MR* = MR V MR¹V MR¹v...v MR¹.
EXAMPLE 7 Find the zero-one matrix of the transitive closure of the relation R where
1 0 1
MR 01 0
0
=
Solution: By Theorem 3, it follows that the zero-one matrix of R* is
[3]
MR* = MR V MR¹V MR¹
Because
M²1
=
it follows that
MR*
=
and
MB1
10
0 1 0 0 1 0
=
0
9.4 Closures of Relations 603
V0 1 0 = 010
1
Transcribed Image Text:THEOREM 3 Let MR be the zero-one matrix of the relation R on a set with n elements. Then the zero-one matrix of the transitive closure R* is MR* = MR V MR¹V MR¹v...v MR¹. EXAMPLE 7 Find the zero-one matrix of the transitive closure of the relation R where 1 0 1 MR 01 0 0 = Solution: By Theorem 3, it follows that the zero-one matrix of R* is [3] MR* = MR V MR¹V MR¹ Because M²1 = it follows that MR* = and MB1 10 0 1 0 0 1 0 = 0 9.4 Closures of Relations 603 V0 1 0 = 010 1
25. Use Algorithm 1 to find the transitive closures of these
relations on {1, 2, 3, 4].
a) {(1, 2), (2, 1), (2, 3), (3, 4), (4,1)}
Transcribed Image Text:25. Use Algorithm 1 to find the transitive closures of these relations on {1, 2, 3, 4]. a) {(1, 2), (2, 1), (2, 3), (3, 4), (4,1)}
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