2. (i) Let R = Z, let M be the left R-module Z, and let X be the subset, X = {12, 11,9} CM. Show that X generates M. (a) (b) Is there any proper subset of X which also generates M? Either give an example (with justification), or explain why there is no such subset.

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 32E: 32. a. Let be an ideal of the commutative ring and . Prove that the setis an ideal of containing...
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Let R= Z, let M be the left R-module Z, and let X be
(i)
the subset, X = {12, 11, 9} C M .
2.
(a)
Show that X generates M.
(b)
Is there any proper subset of X which also generates M?
Either give an example (with justification), or explain why there is no
such subset.
Transcribed Image Text:Let R= Z, let M be the left R-module Z, and let X be (i) the subset, X = {12, 11, 9} C M . 2. (a) Show that X generates M. (b) Is there any proper subset of X which also generates M? Either give an example (with justification), or explain why there is no such subset.
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