# Category:Irrational numbers

Here is a list of articles in the Irrational numbers category of the Computing portal that unifies foundations of mathematics and computations using computers.

In mathematics, an **irrational number** is any real number that is not a rational number, i.e., one that cannot be written as a fraction *a* / *b* with *a* and *b* integers and *b* not zero. This is also known as being *incommensurable*, or without common measure. The irrational numbers are precisely those numbers whose expansion in any given base (decimal, binary, etc.) never ends and never enters a periodic pattern. "Almost all" real numbers are irrational, in a sense which is defined more precisely below.

## Subcategories

This category has the following 3 subcategories, out of 3 total.

### D

### Q

### T

## Pages in category "Irrational numbers"

The following 21 pages are in this category, out of 21 total.

- Irrational number
*(computing)*

### A

- Apéry's constant
*(computing)*

### C

- Copeland–Erdős constant
*(computing)*

### E

- Erdős–Borwein constant
*(computing)*

### G

- Golden ratio
*(computing)*

### H

- Hippasus
*(computing)*

### I

- Irrationality sequence
*(computing)*

### L

- Liouville number
*(computing)*

### P

- Particular values of the Riemann zeta function
*(computing)* - Plastic number
*(computing)* - Prime constant
*(computing)* - Proof that e is irrational
*(computing)*

### Q

- Quadratic irrational number
*(computing)*

### R

- Reciprocal Fibonacci constant
*(computing)*

### S

- Schizophrenic number
*(computing)* - Silver ratio
*(computing)* - Square root of 5
*(computing)* - Square root of 3
*(computing)* - Square root of 2
*(computing)*

### T

- Trigonometric number
*(computing)* - Twelfth root of two
*(computing)*