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Is there a difference between \dots and \ldots, the ellipsis?

If yes: Which? When to use \dots and when to use \ldots?

If no: Why are there both at all?

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\dots is magic! ... when using amsmath ;-) – Juan A. Navarro Oct 17 '12 at 9:59
A great answer is here – Martin Thoma Oct 19 '12 at 18:18
up vote 77 down vote accepted

in latex.ltx, \ldots is equated (\let) to \dots. so in text, it's the same, and you can use either.

with amsmath, the situation is more complicated; \dots tries to determine by context (only in math mode) whether to use \ldots or \cdots, with several more options for the author if amsmath doesn't get it right.

so in general, it's easier to just use \dots and not have to remember the details.

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Thank you very much. :) I'm curious: Where or how to learn these things in the first place? – Foo Bar Oct 15 '12 at 15:16
@FooBar texdoc source2e is a good starting point :) – cmhughes Oct 15 '12 at 16:16
@FooBar and for the ams \dots see texdoc amsmath, of course. – Andrew Swann Jan 18 '15 at 14:09

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