What does the following subring of the complex numbers look like

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Homework Help Overview

The discussion revolves around understanding a specific subring of the complex numbers, defined as the set of ratios of polynomials where the denominator is not a member of the ideal generated by the polynomial x. Participants explore the implications of this definition and the characteristics of the elements within this subring.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants attempt to clarify the nature of the subring and question the implications of the restriction on the denominator. They discuss examples of elements that belong to the subring versus those that do not, and explore the significance of the ideal generated by x.

Discussion Status

The discussion is active, with participants providing examples and questioning the definitions involved. Some guidance has been offered regarding the characteristics of elements in and out of the subring, and there is an ongoing exploration of how to articulate these concepts clearly.

Contextual Notes

Participants note the importance of understanding the restrictions on the denominator and the implications of polynomials being multiples of x. There is also a focus on identifying elements that are not in the subring, particularly through the lens of polynomial characteristics.

  • #31
Metric_Space said:
I'm not sure how to describe polynomials of this form

polynomials of what form?
 
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  • #32
the things you described like i/(x)*(x+i)
 
  • #33
What about it? It's a quotient of the constant polynomial i and the polynomial x(x+i)...
Thus a(x)=i and b(x)=x(x+i)... I don't really see your confusion here.
 
  • #34
I was trying to figure out a way of writing things not in the subring, other than the way already written in the question
 
  • #35
Well, take some elements in (x). And put them in the denumerator of the fraction. Then you obtain things not in the subring.

You obtain things in the subring, by taking elements in (x) and putting them in the denumerator of the fraction...
 

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