Chain Conditions, Semisimple Modules and the Wedderburn–Artin Theorem — Examples
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✓ 12 results · all verified · 6 also independently AI-judged
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1 · Prerequisites
Abstract Algebra
- Binary Operations, Monoids, Groups and Subgroups
- Chain Conditions, Semisimple Modules and the Wedderburn–Artin Theorem
- Cosets, Index and Lagrange's Theorem
- Free Modules, Exact Sequences, Projective and Injective Modules
- Group Homomorphisms and the Isomorphism Theorems
- Modules, Submodules, Quotient Modules and the Isomorphism Theorems
- Normal Subgroups and Quotient Groups
- Polynomial Rings, the Division Algorithm and Roots
- Rings, Subrings, Integral Domains and Fields
- Tensor Products of Modules
- The Field of Fractions and Localisation
Linear Algebra
Number Theory
Real Analysis
2 · Logical flowchart
3 · Items
Example
ℤ is Noetherian but not Artinian as a module over itself
Example
The Prüfer p-group is Artinian but not Noetherian
Example
The ring (ℤ/2)^ℕ is not Noetherian
Example
Mₙ(F) as a direct sum of minimal left ideals
Example
A product of two fields is semisimple with two simple-module types
Example
The ℤ-module ℤ/pᵏ has length k
Example
√2 and (1+√5)/2 are algebraic integers, while 1/2 is not
False statement
False statement: every Artinian module is Noetherian
False statement
False statement: every module has a composition series
False statement
False statement: every semisimple ring is commutative
False statement
False statement: every subring of a Noetherian ring is Noetherian
False statement
False statement: every right Noetherian ring is left Noetherian
Sources
- Arvind Nair, Algebra I, Lecture 5
- MIT 18.706, Lecture 2: Semisimple Modules, Socles, Artinian Rings, Wedderburn's Theorem
- Eloisa Grifo, Commutative Algebra I, Section 1.4
- William Crawley-Boevey, Noncommutative Algebra, Chapter 1 Sections 1.1-1.9
- Keith Conrad, Noetherian Modules, Sections 1-2
- Abigail C. Bailey and John A. Beachy, On Noncommutative Piecewise Noetherian Rings, Example 1