Adding spaces inside a math expression

Question

I want to my statement to say u = g in Omega. I tried coding $$u=g in \Omega$$, but this results in no spaces around the word 'in'. How can I insert them?

\textrm{ in } or with amsmath \text{ in } or even \in? — Qrrbrbirlbel, Dec 09 '12 at 19:07
Are you using plain TeX, or LaTeX? If using the latter, see Why is \[ … \] preferable to $$? and Are $ and $ preferable to $? — Werner, Dec 09 '12 at 19:28

GeoffDS · Accepted Answer · 2012-12-09T19:14:52.237

3

One way is $$u = g \text{ in } \Omega$$

Or, if you don't need the display with two dollar signs, $u = g$ in $\Omega$

Or, if you want a bigger space, $$u = g \quad \text{in} \quad \Omega$$

Or, for an even bigger space, $$u = g \qquad \text{in} \qquad \Omega$$

edited Dec 09 '12 at 19:14

answered Dec 09 '12 at 19:07

GeoffDS

272

Oddly enough, $$u = g \text{ in } \Omega$$ produces an undefined control sequence error... – Paul Dec 09 '12 at 19:24
Did you see the comment by Qrrbrbirlbel? Did you do \usepackage{amsmath} Try that and see if that fixes it. – GeoffDS Dec 09 '12 at 19:46

Adding spaces inside a math expression

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