Let A, m be an Artinian local ring (see 1.13 and 3.2). Prove that the maximal ideal m is nilpotent. More precisely, the d.c.c. gives that mk [Hint: suppose by contradiction that mk 0; let I be minimal among the ideals of A with I · m* # 0. Prove that I = (x) is principal, then apply Nakayama's lemma 2.8.2 to it. Compare mk+1 for some k > 0. Prove that mk = 0. %3D
Let A, m be an Artinian local ring (see 1.13 and 3.2). Prove that the maximal ideal m is nilpotent. More precisely, the d.c.c. gives that mk [Hint: suppose by contradiction that mk 0; let I be minimal among the ideals of A with I · m* # 0. Prove that I = (x) is principal, then apply Nakayama's lemma 2.8.2 to it. Compare mk+1 for some k > 0. Prove that mk = 0. %3D
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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![3.9
Let A, m be an Artinian local ring (see 1.13 and 3.2). Prove that
the maximal ideal m is nilpotent. More precisely, the d.c.c.
gives that mk
[Hint: suppose by contradiction that mk + 0; let I be minimal
among = (x) is
principal, then apply Nakayama's lemma 2.8.2 to it. Compare
M], Chapter 1, Theorem 3.2.
mk+1 for some k > 0. Prove that m* =
%3D
3D0.
the ideals of A with I mk 0. Prove that I
11](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F621668a2-d7f9-4b5a-8e75-1c56081c0500%2F9c38d21a-f04b-4b9f-9bde-8fb771a11d76%2Fs11vvrk_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3.9
Let A, m be an Artinian local ring (see 1.13 and 3.2). Prove that
the maximal ideal m is nilpotent. More precisely, the d.c.c.
gives that mk
[Hint: suppose by contradiction that mk + 0; let I be minimal
among = (x) is
principal, then apply Nakayama's lemma 2.8.2 to it. Compare
M], Chapter 1, Theorem 3.2.
mk+1 for some k > 0. Prove that m* =
%3D
3D0.
the ideals of A with I mk 0. Prove that I
11
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