# Not natural number term

• Pjpic
In summary, there is no specific term used to describe all numbers except for the natural numbers. Some have suggested humorously calling them "unnatural numbers" but this is not an established term. Wikipedia has a list of different types of numbers, and the closest approximation to this concept would be all real numbers except for the naturals, denoted as ##\mathbb{R} \setminus \mathbb{N}##. However, the concept of "all numbers" is not well-defined in mathematics as the term "number" is used loosely for various unrelated things.

#### Pjpic

Is there a term used to describe all number except the natural numbers?

I don't think there's a term for this. I was thinking humorously unnatural numbers but alas this doesn't exist.

One math website joked about it and said the nearest they could come to it were negative numbers...

Wikipedia has a list of number types:

https://en.wikipedia.org/wiki/List_of_types_of_numbers

Do you mean all real numbers except for the naturals? I suppose you'd denote it by ##\mathbb{R} \setminus \mathbb{N}##.

There's really no notion of "all numbers" in mathematics, since "number" is mostly a colloquialism used to describe all kinds of unrelated things.

## 1. What are not natural number terms?

Not natural number terms are numbers that are not whole, positive numbers. They can include decimal numbers, negative numbers, and fractions.

## 2. Why are not natural number terms important in scientific research?

Not natural number terms are important in scientific research because they allow for more precise measurements and calculations. In many cases, natural numbers are not sufficient to accurately represent data, and using not natural number terms can provide a more accurate understanding of the data.

## 3. How are not natural number terms used in statistical analysis?

Not natural number terms are commonly used in statistical analysis to represent data such as temperature, time, and measurements. They are also used in probability calculations and in creating mathematical models.

## 4. Can not natural number terms be irrational numbers?

Yes, not natural number terms can include irrational numbers, which are numbers that cannot be expressed as a fraction and have an infinite number of decimal places. Examples of irrational numbers include pi and the square root of 2.

## 5. Are not natural number terms used in any specific scientific fields?

Not natural number terms are used in various scientific fields, such as physics, chemistry, biology, and engineering. They are also used in economics, finance, and other social sciences to represent and analyze data.