Math & Science ⇒ amsmath | Center split Equation

[laailalalaa]

Hello,

I have the following equation:

Code: Select all

\begin{definition}[\textbf{function jazzup}]
\begin{equation}
\begin{split}
jazzup : X \times Y \to [0,1],\\
long definition of the jazzup function
\end{split}
\end{equation}
\end{definition}

for which two lines of text are required.

If I don't use split, I get two equation numbers, one for each line of text, which I don't want.

Using split, the two lines of text are aligned to the right. Can I center them?

Thanks

[kaiserkarl13]

You might not be able to do precisely what you asked to do, but one of the following may be what you want to do (or close to it):

• Use the multline environment intstead of equation; this will put the first line left-aligned and the second line right-aligned
• Use the split environment with align symbols at the beginning of the line (actually, put them wherever you want the equations to line up)
• Use the gather environment with a \notag command at the end of each line for which you do not want an equation number to be printed. You can then print the number only on the last line, for example.

Unfortunately, there is no "unaligned" version of the split environment included with AMSLaTeX.

[Stefan Kottwitz]

Besides the mentioned alternatives, you could use the gathered environment of amsmath, which produces a centered multi-line block without number, embedding it into the equation environment for getting a single centered number:

Code: Select all

\begin{equation}
  \begin{gathered}
  jazzup : X \times Y \to [0,1],\\
  long definition of the jazzup function
  \end{gathered}
\end{equation}

Stefan

[laailalalaa]

thanks, Stepan_K, correct and easy to use solution..