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<h1 id="function-setissubset">Function setIsSubset <a href="#function-setissubset" title="Permalink">#</a></h1>

Check whether a (multi)set is a subset of another (multi)set. (Every element of set1 is the element of set2.)
Multi-dimension arrays will be converted to single-dimension arrays before the operation.


<h2 id="syntax">Syntax <a href="#syntax" title="Permalink">#</a></h2>

```js
math.setIsSubset(set1, set2)
```

<h3 id="parameters">Parameters <a href="#parameters" title="Permalink">#</a></h3>

Parameter | Type | Description
--------- | ---- | -----------
`a1` | Array &#124; Matrix | A (multi)set
`a2` | Array &#124; Matrix | A (multi)set

<h3 id="returns">Returns <a href="#returns" title="Permalink">#</a></h3>

Type | Description
---- | -----------
boolean | Returns true when a1 is a subset of a2, returns false otherwise


<h3 id="throws">Throws <a href="#throws" title="Permalink">#</a></h3>

Type | Description
---- | -----------


<h2 id="examples">Examples <a href="#examples" title="Permalink">#</a></h2>

```js
math.setIsSubset([1, 2], [3, 4, 5, 6])        // returns false
math.setIsSubset([3, 4], [3, 4, 5, 6])        // returns true
```


<h2 id="see-also">See also <a href="#see-also" title="Permalink">#</a></h2>

[setUnion](setUnion.html),
[setIntersect](setIntersect.html),
[setDifference](setDifference.html)