7. Show that 4 is a subgroup of S,

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Chapter 5 Homework
1. What is the order of a - (4,a.4)? What is the order of "- (4,a,..a.)?
2. What is the order of the following permutations?
2 3 4 5
6 1 2 4
2 3 4 56Y
2 15 4 6 3)
3. Decompose the following into a product of disjoint cycles:
(1 2 3 4 5 6
"2 15 4 6 3)"
(1 2 3 4 5
B.
"3 6 1 2 4 s
4. Decompose the following into a product of transpositions:
(1 2
2 15 46
2 3 4 5
5. If a is an even permutation, then a" is even. If « is an odd
permutation, then a" is also odd.
6. Prove that the product of an even permutation and an odd
permutation is odd.
7. Show that 4 is a subgroup of $.
8. Show that " "B "uß is an even permutation for any permutations ".
9. In the group $, find elements a and b such that |a| = 2 = |b| and |ab| =
3.
10. In S., find a cyclic subgroup of order 4 and a non-cyclic subgroup
of order 4. Hint: use Table 5.1.
Transcribed Image Text:4:35 AA A s3.amazonaws.com Chapter 5 Homework 1. What is the order of a - (4,a.4)? What is the order of "- (4,a,..a.)? 2. What is the order of the following permutations? 2 3 4 5 6 1 2 4 2 3 4 56Y 2 15 4 6 3) 3. Decompose the following into a product of disjoint cycles: (1 2 3 4 5 6 "2 15 4 6 3)" (1 2 3 4 5 B. "3 6 1 2 4 s 4. Decompose the following into a product of transpositions: (1 2 2 15 46 2 3 4 5 5. If a is an even permutation, then a" is even. If « is an odd permutation, then a" is also odd. 6. Prove that the product of an even permutation and an odd permutation is odd. 7. Show that 4 is a subgroup of $. 8. Show that " "B "uß is an even permutation for any permutations ". 9. In the group $, find elements a and b such that |a| = 2 = |b| and |ab| = 3. 10. In S., find a cyclic subgroup of order 4 and a non-cyclic subgroup of order 4. Hint: use Table 5.1.
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