# ne

**Syntax**

ne(X, Y) or X!=Y

**Arguments**

X and Y is a scalar/pair/vector/matrix/set. If X or Y is a pair/vector/matrix, the other is a scalar or a pair/vector/matrix of the same size.

**Details**

If neither X nor Y is a set, conduct the element-by-element comparison of X and Y; return 1 if the elements in X and Y are not the same.

If both X and Y are sets, check if X and Y are not identical.

**Examples**

```
$ 1 2 3 != 2;
[1,0,1]
$ 1 2 3 ne 0 2 4;
[1,0,1]
$ 1:2 != 1:6;
0 : 1
```

```
$ m1=1..6$2:3;
$ m1;
```

#0 |
#1 |
#2 |
---|---|---|

1 |
3 |
5 |

2 |
4 |
6 |

```
$ m1 != 4
```

#0 |
#1 |
#2 |
---|---|---|

1 |
1 |
1 |

1 |
0 |
1 |

```
$ m2=6..1$2:3;
$ m2;
```

#0 |
#1 |
#2 |
---|---|---|

6 |
4 |
2 |

5 |
3 |
1 |

```
$ m1 ne m2;
```

#0 |
#1 |
#2 |
---|---|---|

1 |
1 |
1 |

1 |
1 |
1 |

Set operation: If X!=Y then X and Y are not identical.

```
$ x=set(4 6);
$ y=set(4 6 8);
$ x!=y;
1
$ x!=x;
0
```