a Show that C = b a commutative ring with unity even if M₂ (R) is not. Finally, show that C is a field. a, b ER is a subring of M₂ (R). Moreover, prove that C is a

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter8: Polynomials
Section8.1: Polynomials Over A Ring
Problem 15E: 15. Prove that if is an ideal in a commutative ring with unity, then is an ideal in .
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a-b
is a subring of M₂ (R). Moreover, prove that C is a
Show that C =
a
commutative ring with unity even if M₂ (R) is not. Finally, show that C is a field.
Transcribed Image Text:a-b is a subring of M₂ (R). Moreover, prove that C is a Show that C = a commutative ring with unity even if M₂ (R) is not. Finally, show that C is a field.
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