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irrational number
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real number that cannot be expressed as a ratio of integers
An irrational number is a real number that cannot be expressed as a simple fraction or ratio of two whole numbers. These numbers are important because they fill gaps on the number line that fractions alone cannot reach, and many fundamental mathematical concepts and natural phenomena—like the ratio of a circle's circumference to its diameter—involve them.
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Wikidata facts
- Subclass of
- real number
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- Commons category
- Irrational numbers
- topic's main category
- Category:Irrational numbers
- opposite of
- rational number
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
- maintained by WikiProject
- WikiProject Mathematics
- topic has template
- Template:Irrational number
Sources (3)
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Encyclopedic overview
The number
2
Excerpted from Wikipedia’s “irrational number” article, available under the CC BY-SA 4.0 licence.
Gallery (3)
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