\cdots and \dots, which one to use?
If you have to decide, decide between \ldots
and \cdots
which are the latex commands for low and centred dots, \dots
is an amsmath
command that tries to automatically make the choice for you and automatically switches between \ldots
and \cdots
depending on the following symbol.
As a general rule, use \cdots
if the following thing is centered on the math axis, such as +
or \rightarrow
, and \ldots
if it is punctuation such as .
or ,
The best practices for dots, in my opinion, are those mentioned in The Art of LaTeX by Helin Gai. See page 69 of that document.
Note: I am not Helin Gai. :)