What is the difference between `\ldots`

and `\cdots`

?

For example, To write a sequence of points which is best to use?

`a_1,\ldots,a_n`

Or `a_1,\cdots,a_n`

.

Couple of examples of the difference can be useful.

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# [Tex/LaTex] the difference between \ldots and \cdots

amsmath

What is the difference between `\ldots`

and `\cdots`

?

For example, To write a sequence of points which is best to use?

`a_1,\ldots,a_n`

Or `a_1,\cdots,a_n`

.

Couple of examples of the difference can be useful.

## Best Answer

Although I agree with egreg's comment, the difference is mainly of an aesthetic nature imo. It depends on the context which version to use, which is also how

`amsmath`

decides which to use.Some examples:

`a_1,\ldots,a_n`

aligns better than`a_1,\cdots,a_n`

.But

`a_1 \to \ldots \to a_n`

aligns worse than`a_1 \to \cdots \to a_n`

.The alignment chosen by amsmath is usually the one commonly found in mathematical articles. However, I guess its not really wrong or anything to deviate from it.