I want to write that a quantity is of the order of say, 10 m/s. I have currently used the syntax below, but is there a way to write it completely into siunitx, or is the one considered below a reasonable way to do it?


How about a mathtools-based solution? You get to decide whether to change \mathcal{O} to just the plain O without search/replace within your whole document. :)






Big O

  • Using it, I am not getting the bar symbol $Z=\BigOSI{}{\bar{r}(\bar{r}+\bar{\lambda})}$ – user1942348 Nov 17 '19 at 9:08
  • 1
    @user1942348, in your case you should not use suggested command adopted to specific use but just $Z=\mathcal{O} \bar{r}(\bar{r}+\bar{\lambda})$ – Zarko Nov 17 '19 at 9:20

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