Use this if you are using igraph from R

intersection.igraph.vs {igraph} | R Documentation |

Intersection of vertex sequences

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

`...` |
The vertex sequences to take the intersection of. |

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

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

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()`

```
g <- make_(ring(10), with_vertex_(name = LETTERS[1:10]))
intersection(E(g)[1:6], E(g)[5:9])
```

[Package *igraph* version 1.3.5 Index]