Math

AlgebraElements Of Modern Algebraa. Let G = { [ a ] | [ a ] ≠ [ 0 ] } ⊆ ℤ n . Show that G is a group with respect to multiplication in ℤ n if and only if n is a prime. State the order of G . This group is called the group of units in ℤ n and is designated by U n . ( Sec 3.3 # 5 , Sec 3.4 # 11 , Sec 3.5 # 19 ) b . Construct a multiplication table for the group U 7 of all nonzero elements in ℤ 7 , and identify the inverse of each element. (Sec 4.4 , # 1 , 19 , 26 ) Sec 3.3 # 5 ≪ 5. Exercise 33 of section 3.1 shows that U 13 ⊆ ℤ 13 is a group under multiplication. List the elements of the subgroup 〈 [ 4 ] 〉 of U 13 , and state its order. List the elements of the subgroup 〈 [ 8 ] 〉 of U 13 , and state its order. Sec 3.4 # 11 ≪ 11. If n is a prime, the nonzero elements of ℤ n form a group U n with respect to multiplication. For each of the following values of n , show that this group U n is cyclic. n = 7 b . n = 5 c . n = 11 d . n = 13 e. n = 17 f. n = 19 Sec 3.5 # 19 ≪ 19. If n is a prime, U n , the set of nonzero elements of ℤ n , forms a group with respect to multiplication. Prove or disprove that the mapping ∅ : U n → U n defined by the rule in Exercise 18 is an automorphism of U n . Construct a multiplication table for the group U 7 of all nonzero elements in ℤ 7 , and identify the inverse of each element. (Sec 4.4 , # 1 , 19 , 26 ) Sec 4.4 , # 1 ≪ 1. Consider U 13 , the groups of units in ℤ 13 under multiplication. For each of the following subgroups H in U 13 , partition U 13 into left cosets of H , and state the index [ U 13 : H ] of H in U 13 H = 〈 [ 4 ] 〉 b. H = 〈 [ 8 ] 〉 Sec 4.4 , # 19 ≪ 19. Find the order of each of the following elements in the multiplicative group of units U p . [ 2 ] for p = 13 b. [ 5 ] for p = 13 c. [ 3 ] for p = 17 d . [ 8 ] for p = 17 Sec 4.4 , # 26 ≪ 26 . Let p be prime and G the multiplicative group of units U p = { [ a ] ∈ ℤ p | [ a ] ≠ [ 0 ] } . Use Langrange’s Theorem in G to prove Fermat’s Little Theorem in the form [ a ] p = [ a ] for any a ∈ ℤ .BuyFind*arrow_forward*

8th Edition

Gilbert + 2 others

Publisher: Cengage Learning,

ISBN: 9781285463230

Chapter 3.1, Problem 33E

Textbook Problem

**a.** Let
**Sec**
**Sec**
**Sec**

**b**. Construct a multiplication table for the group

**Sec**

**5.** Exercise

List the elements of the subgroup

List the elements of the subgroup

**Sec**

**11.** If

**b**.

**c**.

**d**.

**e.**

**f.**

**Sec**

**19.** If

Construct a multiplication table for the group

**Sec**

**1.** Consider

**b.**

**Sec**

**19.** Find the order of each of the following elements in the multiplicative group of units

**b.**

**c.**

**d**.

**Sec**

**26**. Let
**Fermat’s Little Theorem** in the form

Elements Of Modern Algebra

Show all chapter solutions

Ch. 3.1 - True or False
Label each of the following...Ch. 3.1 - True or False
Label each of the following...Ch. 3.1 - Label each of the following statements as either...Ch. 3.1 - True or False
Label each of the following...Ch. 3.1 - Label each of the following statements as either...Ch. 3.1 - True or False
Label each of the following...Ch. 3.1 - Label each of the following statements as either...Ch. 3.1 - True or False
Label each of the following...Ch. 3.1 - True or False
Label each of the following...Ch. 3.1 - True or False
Label each of the following...

Ch. 3.1 - True or False
Label each of the following...Ch. 3.1 - In Exercises 114, decide whether each of the given...Ch. 3.1 - Exercises
In Exercises , decide whether each of...Ch. 3.1 - In Exercises 114, decide whether each of the given...Ch. 3.1 - Exercises
In Exercises, decide whether each of...Ch. 3.1 - In Exercises 114, decide whether each of the given...Ch. 3.1 - Exercises
In Exercises, decide whether each of...Ch. 3.1 - Exercises
In Exercises, decide whether each of...Ch. 3.1 - Exercises
In Exercises, decide whether each of...Ch. 3.1 - Exercises
In Exercises, decide whether each of...Ch. 3.1 - In Exercises 114, decide whether each of the given...Ch. 3.1 - Exercises
In Exercises, decide whether each of...Ch. 3.1 - Exercises
In Exercises, decide whether each of...Ch. 3.1 - In Exercises 114, decide whether each of the given...Ch. 3.1 - In Exercises 114, decide whether each of the given...Ch. 3.1 - In Exercises and, the given table defines an...Ch. 3.1 - In Exercises 15 and 16, the given table defines an...Ch. 3.1 - In Exercises, let the binary operation be defined...Ch. 3.1 - In Exercises, let the binary operation be defined...Ch. 3.1 - In Exercises, let the binary operation be defined...Ch. 3.1 - In Exercises 1724, let the binary operation be...Ch. 3.1 - In Exercises 1724, let the binary operation be...Ch. 3.1 - In Exercises, let the binary operation be defined...Ch. 3.1 - In Exercises, let the binary operation be defined...Ch. 3.1 - In Exercises, let the binary operation be defined...Ch. 3.1 - In Exercises, decide whether each of the given...Ch. 3.1 - In Exercises, decide whether each of the given...Ch. 3.1 - In Exercises 2532, decide whether each of the...Ch. 3.1 - In Exercises 2532, decide whether each of the...Ch. 3.1 - In Exercises, decide whether each of the given...Ch. 3.1 - In Exercises, decide whether each of the given...Ch. 3.1 - In Exercises, decide whether each of the given...Ch. 3.1 - In Exercises, decide whether each of the given...Ch. 3.1 - a. Let G={ [ a ][ a ][ 0 ] }n. Show that G is a...Ch. 3.1 - 34. Let be the set of eight elements with...Ch. 3.1 - 35. A permutation matrix is a matrix that can be...Ch. 3.1 - Consider the matrices R=[ 0110 ] H=[ 1001 ] V=[...Ch. 3.1 - Prove or disprove that the set of all diagonal...Ch. 3.1 - 38. Let be the set of all matrices in that have...Ch. 3.1 - 39. Let be the set of all matrices in that have...Ch. 3.1 - 40. Prove or disprove that the set in Exercise ...Ch. 3.1 - 41. Prove or disprove that the set in Exercise ...Ch. 3.1 - 42. For an arbitrary set , the power set was...Ch. 3.1 - Write out the elements of P(A) for the set A={...Ch. 3.1 - Let A={ a,b,c }. Prove or disprove that P(A) is a...Ch. 3.1 - 45. Let . Prove or disprove that is a group with...Ch. 3.1 - In Example 3, the group S(A) is nonabelian where...Ch. 3.1 - 47. Find the additive inverse of in the given...Ch. 3.1 - Find the additive inverse of [ [ 2 ][ 3 ][ 4 ][ 1...Ch. 3.1 - 49. Find the multiplicative inverse of in the...Ch. 3.1 - 50. Find the multiplicative inverse of in the...Ch. 3.1 - Prove that the Cartesian product 24 is an abelian...Ch. 3.1 - Let G1 and G2 be groups with respect to addition....Ch. 3.2 - True or False
Label each of the following...Ch. 3.2 - True or False
Label each of the following...Ch. 3.2 - Label each of the following statements as either...Ch. 3.2 - True or False Label each of the following...Ch. 3.2 - Label each of the following statements as either...Ch. 3.2 - Label each of the following statements as either...Ch. 3.2 - 1.Prove part of Theorem .
Theorem 3.4: Properties...Ch. 3.2 - Prove part c of Theorem 3.4. Theorem 3.4:...Ch. 3.2 - Prove part e of Theorem 3.4. Theorem 3.4:...Ch. 3.2 - An element x in a multiplicative group G is called...Ch. 3.2 - 5. In Example 3 of Section 3.1, find elements and...Ch. 3.2 - 6. In Example 3 of section 3.1, find elements and ...Ch. 3.2 - 7. In Example 3 of Section 3.1, find elements and...Ch. 3.2 - In Example 3 of Section 3.1, find all elements a...Ch. 3.2 - 9. Find all elements in each of the following...Ch. 3.2 - 10. Prove that in Theorem , the solutions to the...Ch. 3.2 - Let G be a group. Prove that the relation R on G,...Ch. 3.2 - Suppose that G is a finite group. Prove that each...Ch. 3.2 - In Exercises and , part of the multiplication...Ch. 3.2 - In Exercises 13 and 14, part of the multiplication...Ch. 3.2 - 15. Prove that if for all in the group , then ...Ch. 3.2 - Suppose ab=ca implies b=c for all elements a,b,...Ch. 3.2 - 17. Let and be elements of a group. Prove that...Ch. 3.2 - Let a and b be elements of a group G. Prove that G...Ch. 3.2 - Use mathematical induction to prove that if a is...Ch. 3.2 - 20. Let and be elements of a group . Use...Ch. 3.2 - Let a,b,c, and d be elements of a group G. Find an...Ch. 3.2 - Use mathematical induction to prove that if...Ch. 3.2 - 23. Let be a group that has even order. Prove that...Ch. 3.2 - 24. Prove or disprove that every group of order is...Ch. 3.2 - 25. Prove or disprove that every group of order is...Ch. 3.2 - 26. Suppose is a finite set with distinct...Ch. 3.2 - 27. Suppose that is a nonempty set that is closed...Ch. 3.2 - Reword Definition 3.6 for a group with respect to...Ch. 3.2 - 29. State and prove Theorem for an additive...Ch. 3.2 - 30. Prove statement of Theorem : for all integers...Ch. 3.2 - 31. Prove statement of Theorem : for all integers...Ch. 3.2 - Prove statement d of Theorem 3.9: If G is abelian,...Ch. 3.3 - Label each of the following statements as either...Ch. 3.3 - True or false
Label each of the following...Ch. 3.3 - True or false Label each of the following...Ch. 3.3 - True or false
Label each of the following...Ch. 3.3 - True or false
Label each of the following...Ch. 3.3 - True or false
Label each of the following...Ch. 3.3 - True or false Label each of the following...Ch. 3.3 - True or false
Label each of the following...Ch. 3.3 - True or false Label each of the following...Ch. 3.3 - True or false Label each of the following...Ch. 3.3 - True or false
Label each of the following...Ch. 3.3 - Let S(A)={ e,,2,,, } be as in Example 3 in section...Ch. 3.3 - Decide whether each of the following sets is a...Ch. 3.3 - 3. Consider the group under addition. List all...Ch. 3.3 - 4. List all the elements of the subgroupin the...Ch. 3.3 - 5. Exercise of section shows that is a group...Ch. 3.3 - 6. Let be , the general linear group of order...Ch. 3.3 - 7. Let be the group under addition. List the...Ch. 3.3 - Find a subset of Z that is closed under addition...Ch. 3.3 - 9. Let be a group of all nonzero real numbers...Ch. 3.3 - 10. Let be an integer, and let be a fixed...Ch. 3.3 - 11. Let be a subgroup of, let be a fixed element...Ch. 3.3 - Prove or disprove that H={ hGh1=h } is a subgroup...Ch. 3.3 - 13. Let be an abelian group with respect to...Ch. 3.3 - Prove that each of the following subsets H of...Ch. 3.3 - 15. Prove that each of the following subsets of ...Ch. 3.3 - Prove that each of the following subsets H of...Ch. 3.3 - 17. Consider the set of matrices, where
...Ch. 3.3 - Prove that SL(2,R)={ [ abcd ]|adbc=1 } is a...Ch. 3.3 - 19. Prove that each of the following subsets of ...Ch. 3.3 - For each of the following matrices A in SL(2,R),...Ch. 3.3 - 21. Let
Be the special linear group of order ...Ch. 3.3 - 22. Find the center for each of the following...Ch. 3.3 - 23. Let be the equivalence relation on defined...Ch. 3.3 - 24. Let be a group and its center. Prove or...Ch. 3.3 - Let G be a group and Z(G) its center. Prove or...Ch. 3.3 - Let A be a given nonempty set. As noted in Example...Ch. 3.3 - (See Exercise 26) Let A be an infinite set, and...Ch. 3.3 - 28. For each, define by for.
a. Show that is an...Ch. 3.3 - Let G be an abelian group. For a fixed positive...Ch. 3.3 - For fixed integers a and b, let S={ ax+byxandy }....Ch. 3.3 - 31. a. Prove Theorem : The center of a group is...Ch. 3.3 - Find the centralizer for each element a in each of...Ch. 3.3 - Prove that Ca=Ca1, where Ca is the centralizer of...Ch. 3.3 - 34. Suppose that and are subgroups of the group...Ch. 3.3 - 35. For an arbitrary in , the cyclic subgroup of...Ch. 3.3 - 36. Let , be an arbitrary nonempty collection of...Ch. 3.3 - 37. If is a group, prove that ,where is the...Ch. 3.3 - Find subgroups H and K of the group S(A) in...Ch. 3.3 - 39. Assume that and are subgroups of the abelian...Ch. 3.3 - 40. Find subgroups and of the group in example ...Ch. 3.3 - 41. Let be a cyclic group, . Prove that is...Ch. 3.3 - Reword Definition 3.17 for an additive group G....Ch. 3.3 - 43. Suppose that is a nonempty subset of a group ....Ch. 3.3 - 44. Let be a subgroup of a group .For, define the...Ch. 3.3 - Assume that G is a finite group, and let H be a...Ch. 3.4 - Label each of the following statements as either...Ch. 3.4 - Label each of the following statements as either...Ch. 3.4 - True or False
Label each of the following...Ch. 3.4 - True or False
Label each of the following...Ch. 3.4 - Label each of the following statements as either...Ch. 3.4 - Label each of the following statements as either...Ch. 3.4 - True or False
Label each of the following...Ch. 3.4 - True or False
Label each of the following...Ch. 3.4 - Label each of the following statements as either...Ch. 3.4 - True or False
Label each of the following...Ch. 3.4 -
Exercises
1. List all cyclic subgroups of the...Ch. 3.4 - Let G=1,i,j,k be the quaternion group. List all...Ch. 3.4 - Exercises
3. Find the order of each element of the...Ch. 3.4 - Find the order of each element of the group G in...Ch. 3.4 - The elements of the multiplicative group G of 33...Ch. 3.4 - Exercises
6. In the multiplicative group, find the...Ch. 3.4 - Exercises
7. Let be an element of order in a...Ch. 3.4 - Exercises
8. Let be an element of order in a...Ch. 3.4 - Exercises
9. For each of the following values of,...Ch. 3.4 - Exercises
10. For each of the following values of,...Ch. 3.4 - Exercises
11. According to Exercise of section,...Ch. 3.4 - For each of the following values of n, find all...Ch. 3.4 - Exercises
13. For each of the following values of,...Ch. 3.4 - Exercises
14. Prove that the set
is cyclic...Ch. 3.4 - Exercises
15. a. Use trigonometric identities and...Ch. 3.4 - For an integer n1, let G=Un, the group of units in...Ch. 3.4 - let Un be the group of units as described in...Ch. 3.4 - Exercises
18. Let be the group of units as...Ch. 3.4 - Exercises
19. Which of the groups in Exercise are...Ch. 3.4 - Consider the group U9 of all units in 9. Given...Ch. 3.4 - Exercises
21. Suppose is a cyclic group of order....Ch. 3.4 - Exercises
22. List all the distinct subgroups of...Ch. 3.4 - Let G= a be a cyclic group of order 24. List all...Ch. 3.4 - Let G= a be a cyclic group of order 35. List all...Ch. 3.4 - Describe all subgroups of the group under...Ch. 3.4 - Find all generators of an infinite cyclic group G=...Ch. 3.4 - Exercises
27. Prove or disprove that each of the...Ch. 3.4 - Exercises
28. Let and be elements of the group....Ch. 3.4 - Let a and b be elements of a finite group G. Prove...Ch. 3.4 - Let G be a group and define the relation R on G by...Ch. 3.4 - Exercises
31. Let be a group with its...Ch. 3.4 - If a is an element of order m in a group G and...Ch. 3.4 - If G is a cyclic group, prove that the equation...Ch. 3.4 - Exercises
34. Let be a finite cyclic group of...Ch. 3.4 - Exercises
35. If is a cyclic group of order and ...Ch. 3.4 - Suppose that a and b are elements of finite order...Ch. 3.4 - Suppose that a is an element of order m in a group...Ch. 3.4 - Exercises
38. Assume that is a cyclic group of...Ch. 3.4 - Suppose a is an element of order mn in a group G,...Ch. 3.4 - Exercises
40. Prove or disprove: If every...Ch. 3.4 - Let G be an abelian group. Prove that the set of...Ch. 3.4 - Let d be a positive integer and (d) the Euler...Ch. 3.5 - Label each of the following statements as either...Ch. 3.5 - True or False
Label each of the following...Ch. 3.5 - Label each of the following statements as either...Ch. 3.5 - True or False
Label each of the following...Ch. 3.5 - Label each of the following statements as either...Ch. 3.5 - True or False
Label each of the following...Ch. 3.5 - Label each of the following statements as either...Ch. 3.5 - True or False
Label each of the following...Ch. 3.5 - Prove that if is an isomorphism from the group G...Ch. 3.5 - Let G1, G2, and G3 be groups. Prove that if 1 is...Ch. 3.5 - Exercises
3. Find an isomorphism from the additive...Ch. 3.5 - Let G=1,i,1,i under multiplication, and let G=4=[...Ch. 3.5 - Let H be the group given in Exercise 17 of Section...Ch. 3.5 - Exercises
6. Find an isomorphism from the additive...Ch. 3.5 - Find an isomorphism from the additive group to...Ch. 3.5 - Exercises
8. Find an isomorphism from the group ...Ch. 3.5 - Exercises
9. Find an isomorphism from the...Ch. 3.5 - Exercises
10. Find an isomorphism from the...Ch. 3.5 - The following set of matrices [ 1001 ], [ 1001 ],...Ch. 3.5 - Exercises
12. Prove that the additive group of...Ch. 3.5 - Consider the groups given in Exercise 12. Find an...Ch. 3.5 - Consider the additive group of real numbers....Ch. 3.5 - Consider the additive group of real numbers....Ch. 3.5 - Exercises
16. Assume that the nonzero complex...Ch. 3.5 - Let G be a group. Prove that G is abelian if and...Ch. 3.5 - Exercises
18. Suppose and let be defined by ....Ch. 3.5 - According to Exercise of Section, If n is a prime,...Ch. 3.5 - For each a in the group G, define a mapping ta:GG...Ch. 3.5 - For a fixed group G, prove that the set of all...Ch. 3.5 - Exercises
22. Let be a finite cyclic group of...Ch. 3.5 - Exercises
23. Assume is a (not necessarily...Ch. 3.5 - Let G be as in Exercise 23. Suppose also that ar...Ch. 3.5 - Exercises
25. Let be the multiplicative group of...Ch. 3.5 - Exercises
26. Use the results of Exercises and ...Ch. 3.5 - Exercises
27. Consider the additive groups , , and...Ch. 3.5 - Exercises
28. Let , , , and be groups with...Ch. 3.5 - Prove that any cyclic group of finite order n is...Ch. 3.5 - Exercises
30. For an arbitrary positive integer,...Ch. 3.5 - Prove that any infinite cyclic group is isomorphic...Ch. 3.5 - Let H be the group 6 under addition. Find all...Ch. 3.5 - Suppose that G and H are isomorphic groups. Prove...Ch. 3.5 - Exercises
34. Prove that if and are two groups...Ch. 3.5 - Exercises
35. Prove that any two groups of order ...Ch. 3.5 - Exercises
36. Exhibit two groups of the same...Ch. 3.5 - Let be an isomorphism from group G to group H....Ch. 3.5 - Exercises
38. If and are groups and is an...Ch. 3.5 - Suppose that is an isomorphism from the group G...Ch. 3.6 - Label each of the following statements as either...Ch. 3.6 - True or False
Label each of the following...Ch. 3.6 - Label each of the following statements as either...Ch. 3.6 - Label each of the following statements as either...Ch. 3.6 - True or False
Label each of the following...Ch. 3.6 - True or False
Label each of the following...Ch. 3.6 - Label each of the following statements as either...Ch. 3.6 - True or False
Label each of the following...Ch. 3.6 - Label each of the following statements as either...Ch. 3.6 - True or False
Label each of the following...Ch. 3.6 - Each of the following rules determines a mapping...Ch. 3.6 - Each of the following rules determines a mapping ...Ch. 3.6 - 3. Consider the additive groups of real numbers...Ch. 3.6 - Consider the additive group and the...Ch. 3.6 - 5. Consider the additive group and define...Ch. 3.6 - Consider the additive groups 12 and 6 and define...Ch. 3.6 - Consider the additive groups 8 and 4 and define...Ch. 3.6 - 8. Consider the additive groups and . Define by...Ch. 3.6 - 9. Let be the additive group of matrices over...Ch. 3.6 - Rework exercise 9 with G=GL(2,), the general...Ch. 3.6 - 11. Let be , and let be the group of nonzero real...Ch. 3.6 - Consider the additive group of real numbers. Let ...Ch. 3.6 - Find an example of G, G and such that G is a...Ch. 3.6 - 14. Let be a homomorphism from the group to the...Ch. 3.6 - 15. Prove that on a given collection of groups,...Ch. 3.6 - 16. Suppose that and are groups. If is a...Ch. 3.6 - 17. Find two groups and such that is a...Ch. 3.6 - Suppose that is an epimorphism from the group G...Ch. 3.6 - 19. Let be a homomorphism from a group to a group...Ch. 3.6 - 20. If is an abelian group and the group is a...Ch. 3.6 - 21. Let be a fixed element of the multiplicative...Ch. 3.6 - 22. With as in Exercise , show that , and describe...Ch. 3.6 - Assume that is a homomorphism from the group G to...Ch. 3.6 - 24. Assume that the group is a homomorphic image...Ch. 3.6 - Let be a homomorphism from the group G to the...

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