When do quadratic polynomials generate the same ideal?

Click For Summary
SUMMARY

Two quadratic polynomials in ##\mathbb{Z}_3[x]## generate the same ideal if and only if they have the same coefficients. This conclusion is derived from the properties of principal ideals in the polynomial ring over the finite field ##\mathbb{Z}_3##. The discussion emphasizes the necessity of demonstrating that if ideals ##I=\langle p(x) \rangle## and ##J=\langle q(x) \rangle## are equal, then both polynomials must belong to each other's generated ideals.

PREREQUISITES
  • Understanding of polynomial rings, specifically ##\mathbb{Z}_3[x]##.
  • Knowledge of ideal theory in ring theory.
  • Familiarity with principal ideals and their properties.
  • Basic concepts of finite fields and their operations.
NEXT STEPS
  • Study the properties of principal ideal domains (PIDs) in ring theory.
  • Learn about the structure of polynomial rings over finite fields.
  • Explore the concept of ideal equality and its implications in algebra.
  • Investigate examples of quadratic polynomials in ##\mathbb{Z}_3[x]## and their generated ideals.
USEFUL FOR

Students of abstract algebra, mathematicians exploring polynomial ideals, and educators teaching ring theory concepts.

Mr Davis 97
Messages
1,461
Reaction score
44

Homework Statement


When do two quadratic polynomials in ##\mathbb{Z}_3 [x]## generate the same ideal?

Homework Equations

The Attempt at a Solution


I feel like they generate the same ideal only when they have the same coefficients, but am not sure how to show this.
 
Physics news on Phys.org
It's not necessary for your question, as you only asked about principal ideals. Nevertheless, is ##\mathbb{Z}_3[x]## a principle ideal domain?
Now to approach your question. As always, write down what is given, namely two ideals ##I=\langle p(x) \rangle## and ##J=\langle q(x)\rangle## with polynomials ##p(x),q(x)\in \mathbb{Z}_3[x]## and ##I=J##. The latter means ##p(x) \in J## and ##q(x) \in I##. What can you conclude from this?
 

Similar threads

  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 18 ·
Replies
18
Views
6K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 12 ·
Replies
12
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K