Math & Science ⇒ automatically number only those equations that I label?

[mattlorig]

When I write a paper, I prefer to number only those equations that I reference later on. Inevitably, as I edit and update my paper, this requires a lot of
1. changing align <---> align*
2. adding and removing \nonumber
I find this rather tedious.

Is there any way to have LaTeX automatically number only those equations that I label? e.g.

Code: Select all

\begin{align}
a &= b \label{eq:one} \\
a &> c
\end{align}

The top equation would carry a number, the bottom one would not.

[gmedina]

Hi,

perhaps the shownolyrefs key for the \mathtoolsset command (from the mathtools package) could be useful for you Using this key, only those equations to which you make reference will be numbered in the final output. Refer to the package documentation for further information.

[mattlorig]

I haven't tried it yet, but from the documentation you referred me to, that looks like exactly what I need. Thanks!

[localghost]

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Best regard and welcome to the board
Thorsten