Let A e M2(Q). 2 Define a ring homomorphism ф: Q] —> М2(Q), f(x) → f(A). (i) Show that A² – 2A – 3 = 0. (ii) Show that ker(ø) = (x² – 2.x – 3). (iii) Find a pair of zero divisors in the image of ø.
Let A e M2(Q). 2 Define a ring homomorphism ф: Q] —> М2(Q), f(x) → f(A). (i) Show that A² – 2A – 3 = 0. (ii) Show that ker(ø) = (x² – 2.x – 3). (iii) Find a pair of zero divisors in the image of ø.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter5: Rings, Integral Domains, And Fields
Section5.2: Integral Domains And Fields
Problem 4E: [Type here]
Examples 5 and 6 of Section 5.1 showed that is a commutative ring with unity. In...
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