# four (cardinal)

the result of adding single to three

- Computed level: L12 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: mathematics  ·  Arena: numeric

## Emergence
**Emerges from:** [three](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-three.cardinal), [single](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-single.quantity), [add](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-add.operation), [results](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-results.outcome)

**Through:** three and single are combined through addition, producing a result

**Novel properties:**
- numerical value greater than three
- composite quantity from addition
- outcome distinct from its addends

## Examples
- Apollo 13 returned safely using the lunar module as a lifeboat after an oxygen tank exploded en route to the Moon. *(engineering)*
- The 2011 Tohoku earthquake shifted Japan's coastline by up to four meters in places, recorded by GPS stations. *(geophysics)*
- The Four Seasons Orchestra performed Vivaldi's 'Four Seasons' at the 2020 Vienna Musikverein season opener. *(culture)*

## Used by
- [fourth](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-fourth.ordinal) (L14)
- [friday](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-friday.temporal) (L15)
- [third](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-third.ordinal) (L13)

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*Canonical: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-four.cardinal*  
*Structured data: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-four.cardinal.json*  
*Every definition provably resolves to space, time, energy and pattern.*