# Adding spaces inside a math expression

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?

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\textrm{ in } or with amsmath \text{ in } or even \in? – Qrrbrbirlbel Dec 9 '12 at 19:07
Are you using plain TeX, or LaTeX? If using the latter, see Why is $…$ preferable to $$? and Are $$and$$ preferable to ? – Werner Dec 9 '12 at 19:28 ## 1 Answer One way is$$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$$- Oddly enough,$$u = g \text{ in } \Omega produces an undefined control sequence error... – Paul Dec 9 '12 at 19:24
Did you see the comment by Qrrbrbirlbel? Did you do \usepackage{amsmath} Try that and see if that fixes it. – Graphth Dec 9 '12 at 19:46