# intersection.igraph.vs

From igraph v1.2.2
by Gabor Csardi

##### Intersection of vertex sequences

Intersection of vertex sequences

##### Usage

```
# S3 method for igraph.vs
intersection(...)
```

##### Arguments

- ...
The vertex sequences to take the intersection of.

##### Details

They must belong to the same graph. Note that this function has ‘set’ semantics and the multiplicity of vertices is lost in the result.

##### Value

A vertex sequence that contains vertices that appear in all given sequences, each vertex exactly once.

##### See Also

Other vertex and edge sequence operations: `c.igraph.es`

,
`c.igraph.vs`

,
`difference.igraph.es`

,
`difference.igraph.vs`

,
`igraph-es-indexing2`

,
`igraph-es-indexing`

,
`igraph-vs-indexing2`

,
`igraph-vs-indexing`

,
`intersection.igraph.es`

,
`rev.igraph.es`

, `rev.igraph.vs`

,
`union.igraph.es`

,
`union.igraph.vs`

,
`unique.igraph.es`

,
`unique.igraph.vs`

##### Examples

```
# NOT RUN {
g <- make_(ring(10), with_vertex_(name = LETTERS[1:10]))
intersection(E(g)[1:6], E(g)[5:9])
# }
```

*Documentation reproduced from package igraph, version 1.2.2, License: GPL (>= 2)*

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