(d) Prove that IJ CINJ. Give an example where 1JÇINJ. (e) Is (ab a e 1,beJ} an ideal in R?

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter6: More On Rings
Section6.1: Ideals And Quotient Rings
Problem 15E: Let I be an ideal in a ring R with unity. Prove that if I contains an element a that has a...
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6. Let I and J be ideals in the ring R.
(a P hat
EJ}
(d) Prove that 1J cInJ. Give an example where 1.J ÇIn J.
(e) Is {ab|a € 1,b E J} an ideal in R?
1 of 2
Transcribed Image Text:6. Let I and J be ideals in the ring R. (a P hat EJ} (d) Prove that 1J cInJ. Give an example where 1.J ÇIn J. (e) Is {ab|a € 1,b E J} an ideal in R? 1 of 2
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