Contemporary Abstract Algebra
9th Edition
ISBN: 9781305657960
Author: Joseph Gallian
Publisher: Cengage Learning
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Chapter 10, Problem 15E
To determine
To calculate : All the elements that map to
Ker
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Chapter 10 Solutions
Contemporary Abstract Algebra
Ch. 10 - Let R* be the group of nonzero real numbers under...Ch. 10 - Let G be the group of all polynomials with real...Ch. 10 - Prob. 7ECh. 10 - Explain why the correspondence x3x from Z12toZ10...Ch. 10 - Prob. 15ECh. 10 - Prove that there is no homomorphism from...Ch. 10 - Let be a homomorphism from a finite group G to G...Ch. 10 - Prob. 39ECh. 10 - Show that a homomorphism defined on a cyclic group...Ch. 10 - Suppose there is a homomorphism from G onto Z2Z2...
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- Write 20 as the direct sum of two of its nontrivial subgroups.arrow_forwardLabel each of the following statements as either true or false. 9. Composition of mappings is an associative operation.arrow_forward9. For any let denote in and let denote in . a. Prove that the mapping defined by is a homomorphism. b. Find ker .arrow_forward
- Let G=1,i,1,i under multiplication, and let G=4=[ 0 ],[ 1 ],[ 2 ],[ 3 ] under addition. Find an isomorphism from G to G that is different from the one given in Example 5 of this section. Example 5 Consider G=1,i,1,i under multiplication and G=4=[ 0 ],[ 1 ],[ 2 ],[ 3 ] under addition. In order to define a mapping :G4 that is an isomorphism, one requirement is that must map the identity element 1 of G to the identity element [ 0 ] of 4 (part a of Theorem 3.30). Thus (1)=[ 0 ]. Another requirement is that inverses must map onto inverses (part b of Theorem 3.30). That is, if we take (i)=[ 1 ] then (i1)=((i))1=[ 1 ] Or (i)=[ 3 ] The remaining elements 1 in G and [ 2 ] in 4 are their own inverses, so we take (1)=[ 2 ]. Thus the mapping :G4 defined by (1)=[ 0 ], (i)=[ 1 ], (1)=[ 2 ], (i)=[ 3 ]arrow_forwardFind all homomorphic images of the quaternion group.arrow_forwardLet be as described in the proof of Theorem. Give a specific example of a positive element of .arrow_forward
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