Are Non-Ordered Numbers More Than Complex Numbers?

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SUMMARY

The discussion centers on the classification of non-ordered numbers, specifically complex numbers, quaternions, octonions, Gaussian integers, and integers modulo n. It establishes that complex numbers are not ordered, and introduces infinitesimal numbers, clarifying that they are also not ordered but can be compared in terms of their infinitesimal properties. The conversation emphasizes the correct terminology, noting that "infinitesimal" is the appropriate adjective, not "infinitesimally".

PREREQUISITES
  • Understanding of complex numbers and their properties
  • Familiarity with quaternions and octonions
  • Knowledge of Gaussian integers and modular arithmetic
  • Basic concepts of infinitesimals in mathematical analysis
NEXT STEPS
  • Research the properties of quaternions and their applications
  • Explore the mathematical framework of octonions
  • Study Gaussian integers and their role in number theory
  • Learn about infinitesimal calculus and its implications in analysis
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Mathematicians, students of advanced mathematics, and anyone interested in the properties of non-ordered number systems.

highmath
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1. The complex number are not ordered. Which else number are not ordered?
2. Are the infinitesimally numbers are ordered numbers? It there a difference between infinitesimally number to another infinitesimally number?
 
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highmath said:
1. The complex number are not ordered. Which else number are not ordered?
2. Are the infinitesimally numbers are ordered numbers? It there a difference between infinitesimally number to another infinitesimally number?
I'm not going to write it out again. Please see your question here. If you don't understand the response please say so on this or the other site.

-Dan
 
highmath said:
1. The complex number are not ordered. Which else number are not ordered?

Other examples: Quaternion numbers ($\mathbb H$), Octonion numbers, Gaussian integers ($\mathbb Z(i)$), integers modulo $n$ ($\mathbb Z_n=\mathbb Z/n\mathbb Z$ or $F_n$).

highmath said:
2. Are the infinitesimally numbers are ordered numbers? It there a difference between infinitesimally number to another infinitesimally number?

Yes.
Let $\varepsilon$ be a positive infinitesimal, and let $\omega=\frac 1\varepsilon$ be the corresponding infinity.
Then:
$$2<2+\varepsilon<2+2\varepsilon<\frac\omega 2<\omega-\varepsilon<\omega<\omega+1+\varepsilon$$
 
By the way "infinitesimally", ending in "ly", is an adverb and cannot modify a noun like "numbers". The corresponding adjective is "infintesmal" You want to talk about "infinitesimal numbers" not "infinitesimally numbers".
 

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