General ⇒ Many equations in two page- How?

[pallav]

I have to write more that 40 mathematical equations for which it may take 2 pages or more where each equations have equation numbers. I want to use

Code: Select all

\begin{subequations}
\begin{eqnarray}
.
 equations
.
\end{eqnarray}
\end{subequations}

I have to start the 1st equation from the middle of page 1, but my problem is that all the equations go to page 2 for which half of page 1 becoming blank. Please help me in this regurd. I have to write few number of equations in page 1 and other in page 2 such that equation number are exactly like 1.a, 1.b, 1.c, 1.d, ... etc.

[gmedina]

Hi,

try the subequations environment from the amsmath package; for the page break issue you could use \allowdisplaybreaks (see Section 3.9 "Vertical spacing and page breaks in multiline displays" of the amsmath documentation)

A little example:

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\documentclass{article}
\usepackage{amsmath}
\usepackage{lipsum}% just to generate some filler text for the example

\allowdisplaybreaks

\begin{document}
\lipsum[1-4]

\begin{subequations}
  \begin{equation}
   a=b
  \end{equation}
  \begin{equation}
   c=d
  \end{equation}
  \begin{equation}
   c=d
  \end{equation}
  \begin{equation}
   c=d
  \end{equation}
  \begin{equation}
   c=d
  \end{equation}
  \begin{equation}
   c=d
  \end{equation}
  \begin{equation}
   c=d
  \end{equation}
  \begin{equation}
   c=d
  \end{equation}
  \begin{equation}
   c=d
  \end{equation}
\end{subequations}

\end{document}