Consider the set of matrices
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Elements Of Modern Algebra
- Let X1,X2,X3 and b be the column matrices below. X1=[101], X2=[110], X3=[011] and b=[123] Find constants a, b, c and c such that aX1+bX2+cX3=barrow_forwardLet A and B be square matrices of order 4 such that |A|=5 and |B|=3.Find a |A2|, b |B2|, c |A3|, and d |B4|arrow_forwardUse an example chosen from 22 matrices to show that for nn matrices A and B,ABBA but AB=BA.arrow_forward
- Find two nonzero matrices A and B such that AB=BA.arrow_forwardLet A and B be square matrices of order 4 such that |A|=4 and |B|=2. Find a |BA|, b |B2|, c |2A|, d |(AB)T|, and e |B1|.arrow_forwardConsider the matrices R=[ 0110 ] H=[ 1001 ] V=[ 1001 ] D=[ 0110 ] T=[ 0110 ] in GL(2,), and let G={ I2,R,R2,R3,H,D,V,T }. Given that G is a group of order 8 with respect to multiplication, write out a multiplication table for G. Sec. 3.3,22b,32b Find the center Z(G) for each of the following groups G. b. G={ I2,R,R2,R3,H,D,V,T } in Exercise 36 of section 3.1. Find the centralizer for each element a in each of the following groups. b. G={ I2,R,R2,R3,H,D,V,T } in Exercise 36 of section 3.1 Sec. 4.1,22 22. Find an isomorphism from the octic group D4 in Example 12 of this section to the group G={ I2,R,R2,R3,H,D,V,T } in Exercise 36 of Section 3.1. Sec. 4.6,14 14. Let G={ I2,R,R2,R3,H,D,V,T } be the multiplicative group of matrices in Exercise 36 of section 3.1, let G={ 1,1 } under multiplication, and define :GG by ([ abcd ])=adbc. Assume that is an epimorphism, and find the elements of K= ker . Write out the distinct elements of G/K. Let :G/KG be the isomorphism described in the proof of Theorem 4.27, and write out the values of .arrow_forward
- Are the two matrices similar? If so, find a matrix P such that B=P1AP. A=[100020003]B=[300020001]arrow_forwardLet A,D, and P be nn matrices satisfying AP=PD. Assume that P is nonsingular and solve this for A. Must it be true that A=D?arrow_forwardLet A be an nn matrix in which the entries of each row sum to zero. Find |A|.arrow_forward
- Show that no 22 matrices A and B exist that satisfy the matrix equation. AB-BA=1001.arrow_forwardLet A and B be square matrices of order n satisfying, Ax=Bx for all x in all Rn. a Find the rank and nullity of AB. b Show that matrices A and B must be identical.arrow_forwardUse elementary matrices to find the inverse of A=100010abc, c0.arrow_forward
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