A common way of specifying which system of units (e.g. SI, esu, CGS - not the units themselves, e.g. kg, J, K) an equation is written in, is adding the name of the system within brackets to the right in the equation. Example:

enter image description here

Is there a standard/recommended way of doing this in LaTeX? I tried looking in siunitx and googling around, but I cannot find anything of relevance...

  • What precisely are you asking? How to right align part of an equation environment? – Seamus Apr 6 '16 at 15:53
  • I'm asking if there is a standard way of writing the system of units in an equation in TeX. If not, I just want to know the recommended way of right-aligning text in an equation. – fromGiants Apr 11 '16 at 10:13

I can suggest two ways:



\vec{\nabla} \times \vec{B} &= \mu_0\vec{j}          && \textup{(SI units)} \\
\vec{\nabla} \times \vec{B} &= \frac{4\pi}{c}\vec{j} && \textup{(CGS units)}

\vec{\nabla} \times \vec{B} &= \mu_0\vec{j}          &\qquad& \textup{(SI units)} \\
\vec{\nabla} \times \vec{B} &= \frac{4\pi}{c}\vec{j} &&       \textup{(CGS units)}


Take your pick.

enter image description here

  • 1
    The alternative of pushing the labels next to the equation numbers doesn't really appeal me (it can be done with flalign). – egreg Apr 6 '16 at 16:52

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.