Are Units in R[x] Exactly the Same as Units in R When R is an Integral Domain?

  • Context: Graduate 
  • Thread starter Thread starter mathmajor2013
  • Start date Start date
  • Tags Tags
    Domain Integral Unit
Click For Summary

Discussion Overview

The discussion centers on the relationship between the units in the ring of polynomials R[x] and the units in the integral domain R, specifically exploring whether the units in R[x] are exactly the same as the units in R when R is an integral domain.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • Post 1 presents the question of whether the units in R[x] correspond exactly to the units in R, suggesting a need to show this relationship.
  • Post 2 prompts for clarification on what attempts have been made to address the question, indicating a collaborative approach to problem-solving.
  • Post 3 raises a consideration about the implications of multiplying non-constant polynomials in R[x] by non-zero polynomials, hinting at the role of polynomial degree in this context.
  • Post 4 suggests that the concept of degree could be relevant to the discussion, although it does not elaborate on how it applies.

Areas of Agreement / Disagreement

The discussion does not appear to reach a consensus, as participants are still exploring the question and raising different points without definitive conclusions.

Contextual Notes

There may be limitations related to the assumptions about the properties of polynomials and the definitions of units in the context of integral domains that are not fully explored in the posts.

Who May Find This Useful

Participants interested in algebra, particularly in the properties of rings and polynomial structures, may find this discussion relevant.

mathmajor2013
Messages
26
Reaction score
0
Question: Show that if R is an integral domain then R^x=R[x]^x(or that the units in R[x] are precisely the units in R, but viewed as constant polynomials).
 
Physics news on Phys.org
This is pretty straight-forward. What have you tried?
 
Well, what happens when we multiply any non-constant polynomial in R[x] by any non-zero polynomial in R[x]?
 
could use concept of degree.
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 21 ·
Replies
21
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
Replies
48
Views
6K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 84 ·
3
Replies
84
Views
11K