Math & Science ⇒ Reset number in eqnarray

[anta40]

Using this script

Code: Select all

\documentclass{article}

\begin{document}

\begin{eqnarray}
a &=& b\\
c &=& d\\
d &=& e
\end{eqnarray}

\stepcounter{eqnarray}

\begin{eqnarray}
f &=& g\\
h &=& i\\
j &=& k
\end{eqnarray}

\end{document}

How to reset the counter, so the output would be:

a = b (1)
c = d (2)
d = e (3)
f = g (1)
h = i (2)
j = k (3)

The output would be:

a = b (1)
c = d (2)
d = e (3)
f = g (4)
h = i (5)
j = k (6)

[olofos]

The counter used by the eqnarray environment is called "equation". Also, you say that you want to reset the counter, not increase it by one, so sou need to use \setcounter instead of \stepcounter. Finally note that use of the eqnarray environment is generally discouraged.

In all, your example should look something like

Code: Select all

\documentclass{article}
\usepackage{amsmath}

\begin{document}

\begin{align}
a &= b\\
c &= d\\
d &= e
\end{align}

\setcounter{equation}{0}

\begin{align}
f &= g\\
h &= i\\
j &= k
\end{align}

\end{document}

[hari_nathus]

Very useful answer.