I am trying to have a multiline equation without any numbering, even not in the last one.

a = x \nonumber \\
b = y

However, this is producing a line number in the last line, which would like not to happen.

I have also tried the equation and equation* environments with no luck.


P.S. What' the markup for rendering LaTeX code. Can't seem to be able to find it in the help page?

  • 4
    erh, align* should be obvious. There is no markup for rendering LaTeX code. Only source code – daleif Jun 19 '13 at 15:33
  • 2
    It might be a good to start reading the manual for the amsmath package and browsing align. – Qrrbrbirlbel Jun 19 '13 at 18:06
  • I fell dumb now... Thanks though. – nunos Jun 19 '13 at 18:44

How about:

\usepackage{amsmath} % for the "align" and "align*" environments
\begin{align*} % the "starred" equation environments produce no equation numbers
a &= b\\  % if no alignment is needed, use the gather* instead of the align* env.
  &= c

If you do use the unstarred version, remember that \nonumber operates on only one line, so to omit numbers entirely, \nonumber (or \notag) must be input for every line.

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