Can Complex Numbers Extend Beyond Two Dimensions?

Click For Summary

Discussion Overview

The discussion explores the concept of extending complex numbers beyond two dimensions, specifically considering whether there are mathematical structures that can represent three or more dimensions. Participants examine the relationship between complex numbers, quaternions, and higher-dimensional extensions.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants propose that complex numbers can be viewed as a second dimension extension of the real number line.
  • Others question whether there exists a third dimension version of complex numbers, suggesting the possibility of extending into the z-axis.
  • A participant mentions quaternions as a four-dimensional extension of complex numbers, referencing their historical context and mathematical structure.
  • Another participant discusses the structure of the space formed by combining complex numbers and real numbers, indicating that this extension is not commonly used.
  • There is a suggestion that real numbers can be considered a subset of complex numbers, specifically as complex numbers with a zero imaginary component.

Areas of Agreement / Disagreement

Participants express varying views on the dimensionality of complex numbers, with some supporting the idea of quaternions as a four-dimensional extension while others focus on the potential for three-dimensional representations. The discussion remains unresolved regarding the existence and utility of these higher-dimensional extensions.

Contextual Notes

Some limitations include the lack of consensus on definitions of dimensionality in this context and the historical usage of these mathematical structures, which may affect their acceptance and application.

thetexan
Messages
269
Reaction score
13
Complex numbers ##a+bi## can be thought of as a second dimension extension of the real number line.

Is there a third dimension version of this? Are there even more complex numbers that not only extend into the y-axis but also the z axis?

tex
 
Physics news on Phys.org
thetexan said:
Complex numbers ##a+bi## can be thought of as a second dimension extension of the real number line.

Is there a third dimension version of this? Are there even more complex numbers that not only extend into the y-axis but also the z axis?

tex

Not 3, but 4 dimensions:

https://en.wikipedia.org/wiki/Quaternion
 
yes, You can obtain it considering ##\mathbb{C}\times \mathbb{R}## as structure space and giving rules for the addition and multiplication, from the history point of view is not used so much this extension ...
More interesting is the ##4## dimensional extension, this is the set of quaternions ...
 
Last edited:
Fixed that for you...
Ssnow said:
giving rules for the addiction addition and multiplication
 
  • Like
Likes   Reactions: SammyS and Ssnow
So is it correct to say that the single dimension real numbers can be considered a subset of the two dimensional complex number set where the real numbers are complex numbers with a 0 imaginary component?

tex
 
thetexan said:
So is it correct to say that the single dimension real numbers can be considered a subset of the two dimensional complex number set where the real numbers are complex numbers with a 0 imaginary component?

tex

Yes!
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 19 ·
Replies
19
Views
4K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 36 ·
2
Replies
36
Views
7K
  • · Replies 21 ·
Replies
21
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 10 ·
Replies
10
Views
2K