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December 22nd, 2017, 12:44 AM   #1
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Ideals

Consider the ideal I = 12Z of Z. Find a proper ideal J of Z such that I + J = Z.
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December 22nd, 2017, 01:58 AM   #2
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Originally Posted by shashank dwivedi View Post
Consider the ideal I = 12Z of Z. Find a proper ideal J of Z such that I + J = Z.
Hint: what's a number relatively prime to 12?
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