All Matches

Solution Library

Expert Answer

Textbooks

Search Textbook questions, tutors and Books

Oops, something went wrong!

Change your search query and then try again

Result Not Found

Books FREE
Tutors
Study Help
Ask a Question

Search
Sign In
Register

study help
mathematics
a first course in abstract algebra

Questions and Answers of A First Course In Abstract Algebra

Show that the number of conjugate classes in Sn is also the number of different abelian groups (up to isomorphism) of order pn, where p is a prime number.
Let G be a finitely generated abelian group with identity 0. A finite set {b1, · · · , bn}, where bi ∈ G, is a basis for G if {b1, · · · , bn} generates G and ∑ni=1 =1 mibi = 0 if and
Let H be a subgroup of a group G. Show that GH = {g ∈ G| gHg-1 = H} is a subgroup of G.
Show that free abelian groups of finite rank are precisely the finitely generated abelian groups containing no nonzero elements of finite order.
We showed in Example 15.6 that A4 has no subgroup of order 6. The preceding exercise shows that such a subgroup of A4 would have to be isomorphic to either Z6 or S3. Show again that this is
Let G be any group. An abelian group G* is a blip group of G if there exists a fixed homomorphism ∅ of G onto G* such that each homomorphism ψ of G into an abelian group G' can be factored as ψ =
Find the center of S3 x D4.
Show that if n > 2, the center of Sn is the subgroup consisting of the identity permutation only.
Let S be any set. A group G together with a fixed function g : S → G constitutes a blop group on S if for each group G' and map f : S → G' there exists a unique homomorphism ∅f of G into G'
Let G be a finite group and let primes p and q ≠ p divide |G|. Prove that if G has precisely one proper Sylow p-subgroup, it is a normal subgroup, so G is not simple.
Show that Q under addition is not a free abelian group.
Let S = {aibj|0 ≤ i < m, 0 ≤ j < n}, that is, S consists of all formal products aibj starting with a0b0 and ending with am-1bn-1. Let r be a positive integer, and define multiplication
Find the ascending central series of S3 x Z4.
Characterize a free abelian group by properties in a fashion similar to that used in Exercise 13. Data from Exercise 13Let S be any set. A group G together with a fixed function g : S → G
Show that every group of order 45 has a normal subgroup of order 9.
Deal with showing the uniqueness of the prime powers appearing in the prime-power decomposition of the torsion subgroup T of a finitely generated abelian group. Let p be a fixed prime. Show that
Find the ascending central series of S3 x D4.
Show that if n = pq, with p and q primes and q > p and q ≡ 1 (mod p ), then there is exactly one nonabelian group (up to isomorphism) of order n. Recall that the q - 1 nonzero elements of Zq
Prove Corollary 36.4. Data from Corollary 36.4Let G be a finite group. Then G is a p-group if and only if |G| is a power of p. Proof We leave the proof of this corollary to Exercise 14.
Deal with showing the uniqueness of the prime powers appearing in the prime-power decomposition of the torsion subgroup T of a finitely generated abelian group.Show that in any prime-power
Deal with showing the uniqueness of the prime powers appearing in the prime-power decomposition of the torsion subgroup T of a finitely generated abelian group.Using Exercise 17, show
Correct the definition of the italicized term without reference to the text, if correction is needed, so that it is in a form acceptable for publication.A composition series of a group G is a finite
Let G be a finite group and let p be a prime dividing |G|. Let P be a Sylow p-subgroup of G. Show that N[N[P]] = N[P].
Deal with showing the uniqueness of the prime powers appearing in the prime-power decomposition of the torsion subgroup T of a finitely generated abelian group.Let G be any abelian group and let n be
Correct the definition of the italicized term without reference to the text, if correction is needed, so that it is in a form acceptable for publication.A solvable group is one that has a composition
Is the group D4 of symmetries of the square in Example 8.10 solvable?Data from in Example 8.10Let us form the dihedral group D4 of permutations corresponding to the ways that two copies of a square
Let G be a finite group and let a prime p divide |G|. Let P be a Sylow p-subgroup of G and let H be any p-subgroup of G. Show there exists g ∈ G such that gHg-1 ≤ P.
Deal with showing the uniqueness of the prime powers appearing in the prime-power decomposition of the torsion subgroup T of a finitely generated abelian group.Referring to Exercise 16, show that Zpr
Mark each of the following true or false. ___ a. Every normal series is also subnormal. ___ b. Every subnormal series is also normal. ___ c. Every principal series is a composition
Show that every group of order (35)3 has a normal subgroup of order 125.
Find a composition series of S3 x S3. Is S3 x S3 solvable?
Let G be Z36 . Refer to the proof of Theorem 35.11. Let the subnormal series (1) be {0} < (12) < (3) < Z36 and let the subnormal series (2) be {0} < (18) < Z36. Find chains (3) and (4)
Show that there are no simple groups of order 255 = (3)(5)(17).
Deal with showing the uniqueness of the prime powers appearing in the prime-power decomposition of the torsion subgroup T of a finitely generated abelian group. Let G be a finitely generated
Show that there are no simple groups of order prm, where pi s a prime, r is a positive integer, and m < p.
Let T be the torsion subgroup of a finitely generated abelian group. Suppose T ≈ Zm1 x Zm2 x · · · x Zmr ≈ Zn1, x Zn2 x · · · x Zns, where mi divides mi+1 for i = 1, · · ·, r - 1, and nj
Let G be a finite group. Regard G as a G-set where G acts on itself by conjugation. a. Show that GG is the center Z(G) of G. b. Use Theorem 36.1 to show that the center of a finite
Let T be the torsion subgroup of a finitely generated abelian group. Suppose T ≈ Zm1 x Zm2 x · · · x Zmr ≈ Zn1, x Zn2 x · · · x Zns, where mi divides mi+1 for i = 1, · · ·, r - 1, and nj
Repeat Exercise 20 for the group Z24 with the subnormal series (1) {0} < (12) < (4) < Z24 and (2) {0} < (6) < (3) < Z24.Data from Exercise 20Let G be Z36 . Refer to the proof of
Let p be a prime. Show that a finite group of order pn contains normal subgroups Hi for 0 ≤ i ≤ n such that |Hi| = pi and Hi < Hi+1 for 0 ≤ i < n.
Let T be the torsion subgroup of a finitely generated abelian group. Suppose T ≈ Zm1 x Zm2 x · · · x Zmr ≈ Zn1, x Zn2 x · · · x Zns, where mi divides mi+1 for i = 1, · · ·, r - 1, and nj
Let H*, H, and K be subgroups of G with H* normal in H. Show that H* ∩ K is normal in H ∩ K.
Let G be a finite group and let P be a normal p-subgroup of G. Show that P is contained in every Sylow p-subgroup of G.
Show that if H0= {e} < H1 < H2 < · · · < Hn = G is a subnormal (normal) series for a group G, and if Hi+1/Hi is of finite order Si+1, then G is of finite order S1S2 ···Sn.
Show that an infinite abelian group can have no composition series.
Show that a finite direct product of solvable groups is solvable.
Show that a subgroup K of a solvable group G is solvable.
Let H0 = {e} < H1 < ··· < Hn = G be a composition series for a group G. Let N be a normal subgroup of G, and suppose that N is a simple group. Show that the distinct groups among H0, HiN
Let G be a group, and let H0 = {e} < H1 < ··· < Hn = G be a composition series for G. Let N be a normal subgroup of G, and let γ : G → G/N be the canonical map. Show that the
Prove that a homomorphic image of a solvable group is solvable.
Show that the given number α ∈ C is algebraic over Q by finding f(x) ∈ Q[x] such that f(α) = 0.1 + √2
Determine whether there exists a finite field having the given number of elements.4096
Prove the trigonometric identity cos3θ = 4 cos3θ - 3 cosθ from the Euler formula, eiθ = cosθ + i sin θ.
Find the degree and a basis for the given field extension. Be prepared to justify your answers.Q(√2) over Q
Find three bases for R2 over R, no two of which have a vector in common.
Using the proof of Theorem 32.11, show that the regular 9-gon is not constructible. Data from Theorem 32.11Trisecting the angle is impossible; that is, there exists an angle that cannot be
Determine whether there exists a finite field having the given number of elements.3127
Find the degree and a basis for the given field extension. Be prepared to justify your answers.Q(√2,√3) over Q
Determine whether the given set of vectors is a basis for R3 over R.{(1, 1, 0), (1, 0, 1), (0, 1, 1)}
Determine whether there exists a finite field having the given number of elements.68,921
Find the degree and a basis for the given field extension. Be prepared to justify your answers.Q(√2, √3,√18) over Q
Show that the given number α ∈ C is algebraic over Q by finding f(x) ∈ Q[x] such that f(α) = 0. +泛
Show that the given number α ∈ C is algebraic over Q by finding f(x) ∈ Q[x] such that f(α) = 0. √√√√2-i
Determine whether the given set of vectors is a basis for R3 over R.{(-1, 1, 2), (2, -3, 1), (10, -14, 0)}
Find the number of primitive 8th roots of unity in GF(9).
Referring to Fig. 32.13, where AQ̅ bisects angle OAP, show that the regular 10-gon is constructible (and therefore that the regular pentagon is also). 36° 1 1 Q 32.13 Figure A P
Find the degree and a basis for the given field extension. Be prepared to justify your answers.Q(3√2, √3) over Q
Show algebraically that it is possible to construct an angle of 30°.
Give a basis for the indicated vector space over the field.Q(√2) over Q
Find irr(α, Q) and deg(α, Q) for the given algebraic number a ∈ C Be prepared to prove that your polynomials are irreducible over Q if challenged to do so. 3-√√6
Find the number of primitive 18th roots of unity in GF(19).
Find the degree and a basis for the given field extension. Be prepared to justify your answers.Q(√2, 3√2) over Q
Give a basis for the indicated vector space over the field.R(√2) over R
Use the results of Exercise 5 where needed to show that the statement is true.The regular 20-gon is constructible. Data from Exercise 5Referring to Fig. 32.13, where AQ̅ bisects angle OAP, show
Find the number of primitive 15th roots of unity in GF(31).
Find irr(α, Q) and deg(α, Q) for the given algebraic number a ∈ C Be prepared to prove that your polynomials are irreducible over Q if challenged to do so. √ ( 3 ) +√7
Find the degree and a basis for the given field extension. Be prepared to justify your answers.Q(√2 + √3) over Q
Use the results of Exercise 5 where needed to show that the statement is true.The regular 30-gon is constructible. Data from Exercise 5Referring to Fig. 32.13, where AQ̅ bisects angle OAP, show
Give a basis for the indicated vector space over the field.Q(3√2) over Q
Find the number of primitive 10th roots of unity in GF(23).
Find the degree and a basis for the given field extension. Be prepared to justify your answers.Q(√2√3) over Q
Use the results of Exercise 5 where needed to show that the statement is true.The angle 72° can be trisected.Data from Exercise 5Referring to Fig. 32.13, where AQ̅ bisects angle OAP, show that the
Give a basis for the indicated vector space over the field.C over R
Find irr(α, Q) and deg(α, Q) for the given algebraic number a ∈ C Be prepared to prove that your polynomials are irreducible over Q if challenged to do so.√2 + i
Mark each of the following true or false. ___ a. The nonzero elements of every finite field form a cyclic group under multiplication. ___ b. The elements of every finite field form a cyclic
Find the degree and a basis for the given field extension. Be prepared to justify your answers.Q(√2,3√5) over Q
Use the results of Exercise 5 where needed to show that the statement is true.The regular 15-gon can be constructed.Data from Exercise 5Referring to Fig. 32.13, where AQ̅ bisects angle OAP, show
Classify the given a ∈ C as algebraic or transcendental over the given field F. If α is algebraic over F, find deg(α, F).α = i, F = Q
Let Z̅2 be an algebraic closure of Z2, and let α, β ∈ Z̅2 be zeros of x3 + x2 + 1 and of x3 + x2 + 1, respectively. Using the results of this section, show that Z2(α) = Z2(β).
Find the degree and a basis for the given field extension. Be prepared to justify your answers.Q(3√2, 3√6,3√24) over Q
Give a basis for the indicated vector space over the field.Q(4√2) over Q
Classify the given a ∈ C as algebraic or transcendental over the given field F. If α is algebraic over F, find deg(α, F).
Show that every irreducible polynomial in Zp[x] is a divisor of xPn - x for some n.
Find the degree and a basis for the given field extension. Be prepared to justify your answers.Q(√2,√6) over Q(√3)
Suppose you wanted to explain roughly in just three or four sentences, for a high school plane geometry teacher who never had a course in abstract algebra, how it can be shown that it is impossible
According to Theorem 30.23, the element 1 + α of Z2(a) of Example 29.19 is algebraic over Z2. Find the irreducible polynomial for 1 + α in Z2[x].Data from in Example 29.19The polynomial p(x) = x2 +
Classify the given a ∈ C as algebraic or transcendental over the given field F. If α is algebraic over F, find deg(α, F).
Let F be a finite field of pn elements containing the prime subfield Zp. Show that if α ∈ F is a generator of the cyclic group (F*, ·) of nonzero elements of F, then deg(α, Zp) = n.
Find the degree and a basis for the given field extension. Be prepared to justify your answers.Q(√2 + √3) over Q(√3)
Classify the given a ∈ C as algebraic or transcendental over the given field F. If α is algebraic over F, find deg(α, F).α = √π, F = R

Showing 400 - 500 of 1630

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Last

Get In Touch

About Us
Contact Us
Career
Jobs
FAQ
Campus Ambassador

Company Info

Security
Copyrights
Privacy Policy
Terms & Condition
SolutionInn Fee
Scholarship

Services

Sitemap
Fun
Definitions
Become Tutor
Study Help Categories
Recent Questions
Expert Questions

Copyright © 2024 SolutionInn All Rights Reserved.

Get the SolutionInn - Study Help App