Math & Science ⇒ problem with \nonumber using align

[NELLLY]

Hello
when I use the following commands

Code: Select all

\begin{align}
 P(S_0=0, D_{S_0}\in I_1)&=0\label{S0::I1}
\\[-4mm]
\intertext{and}\\[-10mm]
 P(S_0 = 0, D_{S_0} \in I'_2)&=P(0< T_A \leq h_2)\times P(D_{S_0} \in I'_2) \nonumber\\
 &=1-e^{-\lambda
 h_2},\label{S0::I2}
\end{align}

the second equation is also numbered although I use the \nonumber or \notag at its end. What should I do?

[svend_tveskaeg]

Provide a minimal working example.

[cgnieder]

Provide a minimal working example.

The example actually works if you click on the writeLaTeX link

The second line is not numbered but an additional line in between as you can see if you remove the [-10mm] argument:

Code: Select all

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{align}
 a &= b
\intertext{and}\\
 a &= b \nonumber\\
   &= c \label{S0::I2}
\end{align}
\end{document}

I guess what you actually want is this

Code: Select all

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{align}
 a &= b
\intertext{and\vspace{-\abovedisplayskip}}
 a &= b \nonumber\\
   &= c \label{S0::I2}
\end{align}
\end{document}

or maybe

Code: Select all

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{align}
 a &= b \\[-\belowdisplayskip]
\intertext{and\vspace{-\abovedisplayskip}}
 a &= b \nonumber\\
   &= c \label{S0::I2}
\end{align}
\end{document}

in which case the following could be easier:

Code: Select all

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{align}
 a &= b \\
\noalign{\text{and}}
 a &= b \nonumber\\
   &= c \label{S0::I2}
\end{align}
\end{document}

Regards

[svend_tveskaeg]

The example actually works if you click on the writeLaTeX link

I see. I just looked at the code and assumed that what I saw was all the code.

[cgnieder]

The example actually works if you click on the writeLaTeX link

I see. I just looked at the code and assumed that what I saw was all the code.

I just found out by chance: I clicked on it in order to complete it (there were only four lines missing anyway) and recognized that writeLaTeX completed the snippet. Nice feature...

Regards

[svend_tveskaeg]

Nice feature...

Definitely!

P.S. Sorry for going off topic.