# User talk:Improbable keeler

## some copy-editing details

Hello.

You'll notice in this edit that it's possible to use actual en-dashes (and em-dashes) rather than double hyphens. (In text mode in LaTeX, double hyphens appear in the final product as en-dashes, but that doesn't work in html.)

Also, in standard TeX usage, one uses \cup in expressions like these:

${\displaystyle A\cup B,\qquad A_{1}\cup \cdots \cup A_{n}\,}$

and \bigcup in expressions like this:

${\displaystyle \bigcup _{x\in A}g(x).\,}$

I edited the article accordingly. Michael Hardy (talk) 01:04, 15 October 2013 (UTC)

OK. Thanks.Improbable keeler (talk) 10:41, 15 October 2013 (UTC)