Explore BrainMass

Linear Transformation

Homomorphisms and Surjections

Let f:G->H be a group homomorphism. Prove or disprove the following statement. 1.Let a be an element of G. If f(a) is of finite order, then a is also of finite order. 2.Let f be a surjection. Then f is an isomorphism iff the order of the element f(a) is equal to the order of the element a , for all a belong to G. F

Vector Spaces, Basis and Quotient Spaces

1. Let and be vector spaces over and let be a subspace of Show that for all is a subspace of and this subspace is isomorphic to . Deduce that if and are finite dimensional, then dim = (dim - dim )dim 2. Let be a linear operator on a finite dimensional vector space Prove that there is a basis

Normal subgroups, Second Theorem of Isomorphism, Conjugates and Cyclic Groups

Problem 1. Let a,b be elements of a group G Show a) the conjugate of the product of a and b is the product of the conjugate of a and the conjugate of b b) show that the conjugate of a^-1 is the inverse of the conjugate of a c)let N=(S) for some subset S of G. Prove that the N is a normal subgroup of G if gSg^-1<=N for

Linear Transformations and Subspaces

B1) This question concerns the following two subsets of : (a) Show that , and find a vector in that does not belong to T. [3] (b) Show that T is a subspace of . [4] (c) Show that S is a basis for T, and write down the dimension of T. [7] (d) Find an orthogonal basis for T that contains the vector .

Linear Combinations, Basis and Transformations

1. Given a basis B = { u1 = [1, 2], u2 = [2, 1] } for R^2, express u = [7, -2] as a linear combination of u1 and u2. How many ways can you do this? (in this problem...the u1 and u2 should actually be u sub 1 and u sub 2...I couldn't do that notation here....also the u1, u2, and u should all be bold to represent vectors) 2. L


This week lecture is taught about Isomorphism, automorphism and Inner automorphism, but I don't understand what they are. Can you give some simple examples?


Please help. I only need answers with brief explanations. No need of detailed working. (See attached file for full problem description) --- State whether the following are true or false with reasons: 1. If a in S6, then an =1 for some n greater than or equal to 1. 2. If axa-1=bxb-1, then a=b 3. The function e


We are working on the proof of showing G (the group of rigid motions of a regular dodecahedron) is isomorphic to the alternating group A_5. Lemma: Let H be a normal subgroup of a finite group G, and let x be an element of G. If o(x) and [G:H] are relatively prime, then x is in H. Theorem: Any 60 element group having 24 el

Linear Mapping, Linear Space, Differentiability and Continuity

In each of Exercises 40 through 46 following, a linear space V is given and a mapping T : V&#8594;V is defined as indicated. In each case determine whether T is a linear mapping. If T is linear, determine the kernel (or null space) and range, and compute the dimension of each of these subspaces wherever they are finite-dimension

Laplace Transformation - Initial Value

What is the best statement that you can make about the existence and uniqueness of the solution of the following initial value problems? (a) y'= sin(ty)+1/t, y(1)=2 (See attachment for full question)

Linear Transformations, Change of Basis and Conjugation

Let V = Q3 and let ' be the linear transformation from V to itself: '(x, y, z) = (9x + 4y + 5z,&#8722;4x &#8722; 3z,&#8722;6x &#8722; 4y &#8722; 2z), x, y, z E Q With respect to the standard basis B find the matrix representing this linear transformation. Take the basis E = {(2,&#8722;1,&#8722;2), (1, 0,&#8722;1), (3,&#8722;2

Linear Transformations : Basis, Kernel, Image, Onto, One-to-one and Matrices

1) Define a linear transformation.... a) Find a basis for Ker T. b) Find a basis for Im T. c) Is T an onto map? d) Is T a one-to-one map? 2) Define a linear transformation... a) Find the matrix for T with respect to the standard basis. b) Find the matrix for T with respect to { ( ) , ( ) , ( ) } as the basis for R and t

Order of Elements, Factor Groups and Homomorphisms

Help with this linear transformation problem. Please help with the following problem. Provide step by step calculations. A. What is the order of the element 14 + <8> in the factor group Z24 / <8>? I know that if I let G = Z24 and H = <8> , then H = <8> = {0,8,16}. So Z24/<8> = {0+H,1+H,2+H,3+H,4+H,5+H,6+H,7+H}.

Identity Element Preserved in a Homomorphism

Let ... be a homomorphism of a group ... into a group... . Show that if is the identity element of... , then is the identity element... in ... . Please see the attached file for the fully formatted problems.

Mapping : Homomorphism

Prove that mapping... is a homomorphism. Note: both groups are under addition. Please see attached for full question.

Homomorphisms, Kernels and Prime Ideals

Given an onto ring homomorphism &#934;: R1 --> R2 we saw in class that if I <u>C</u> R1 is an ideal containing the kernel of &#934;, then &#934;(I) is an ideal of R2. In addition, we saw that if J <u>C</u> R2 is an ideal, then &#934;&#713;¹(J) is an ideal of R1 containing kernel of &#934;. (i) Show that if I <u>C</u> R1 is a

Job Shop Problem

Suppose you have N jobs that have to be processed on a single machine. For i = 1, 2, . . . ,N, job i requires pi units of time on the machine, and has weight wi. The objective is to schedule these jobs so as to minimize the sum of the weighted completion time of all the jobs, where the completion time of job i is the time at w