Tell me more ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.
up vote 1 down vote favorite

What does $\overline{g(x)}$ mean?

Please give me some examples.

share|improve this question
2  
Without any further information, it probably means "apply the function $g$ to the number $x$, and return the complex conjugate of the (complex) number $g$ returns". But there is lots of opportunity for it to be defined as something different in a particular text. – Henning Makholm Nov 20 '11 at 15:40
2  
Are you dealing with real or complex analysis? In complex analysis, $\overline{g(z)}$ is the complex congugate of $g(z)$. I am not aware of any universal meaning of $\overline{g(z)}$ in real analysis. – robjohn♦ Nov 20 '11 at 15:41
1  
You saw this somewhere, did you not? Where did you see this? – J. M. Nov 20 '11 at 15:41
3  
There it's the complex conjugate, so the latter. – Henning Makholm Nov 20 '11 at 16:20
show 1 more comment

Know someone who can answer? Share a link to this question via email, Google+, Twitter, or Facebook.

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.