Maximal Ideal Theorem: Proving M/IM=O for R-Module M and Ideal I

  • Thread starter Thread starter mclove
  • Start date Start date
Click For Summary
SUMMARY

The discussion centers on the Maximal Ideal Theorem, specifically proving that for an R-module M and an ideal I, if Mm=0 for all maximal ideals m, then M=IM, leading to the conclusion that M/IM=O. The exact sequence O→IM→M→M/IM→O is established, which is crucial for demonstrating the relationship between M and IM. The question of whether M is a left or right R-module is raised, highlighting the implications of R's operations on M.

PREREQUISITES
  • Understanding of R-modules and their properties
  • Familiarity with the concept of maximal ideals in ring theory
  • Knowledge of exact sequences in homological algebra
  • Experience with algebraic structures and operations on modules
NEXT STEPS
  • Study the properties of maximal ideals in commutative algebra
  • Learn about exact sequences and their applications in module theory
  • Explore the implications of left vs. right R-modules in algebra
  • Investigate the relationship between ideals and modules in ring theory
USEFUL FOR

Mathematicians, algebraists, and students studying module theory and ring theory, particularly those interested in the properties of R-modules and the implications of the Maximal Ideal Theorem.

mclove
Messages
5
Reaction score
0

Homework Statement



let M be an R-module and I an ideal of R
suppose Mm=0 for all maximal ideals m
then, M=IM




The Attempt at a Solution



O[tex]\rightarrow[/tex] IM [tex]\rightarrow[/tex] M [tex]\rightarrow[/tex] M/IM [tex]\rightarrow[/tex] O is exact seq
To show that M/IM=O (then M=IM)
 
Physics news on Phys.org
Is M a left R-module or a right R-module? You have R operating both on the right (Mm = 0) and the left (M = IM) of M. Also, assuming that all R operations are on the left (say), then what if I is a maximal ideal? We'd then have that M = MI = 0, which doesn't seem correct.

Petek
 

Similar threads

  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 2 ·
Replies
2
Views
5K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
3
Views
3K
  • · Replies 17 ·
Replies
17
Views
3K
Replies
15
Views
2K
  • · Replies 3 ·
Replies
3
Views
1K