Text Formatting ⇒ One line too much

[Cham]

I need to remove an empty line after an equation, as shown on the picture below. The vertical space is way too much in this case.

I can't give a minimal compilable code example here, since this is occuring in some rare instances only and is unpredictable.

What command should I use to tell LaTeX to remove that empty line ?

Is there an inverse of the \newline command ?

space.jpg (27.66 KiB) Viewed 24622 times

[Stefan Kottwitz]

Is there an inverse of the \newline command ?

Something like \vspace{-\baselineskip} perhaps. But I would rather fix the actual problem. Do you have an empty line after the formula? Before and after displayed math environments, empty lines, which mean paragraph breaks, should not be used, because the displayed environment already adds its own space.

Stefan

[Cham]

I'm not sure to understand. The code is like this (this is a non-compilable example) :

Code: Select all

Bla bla bla bla bla bla bla :
	\begin{align}
		A &= B \nonumber \\ \nonumber \\
		&= C \nonumber \\ \nonumber \\
		&= D.
	\end{align} % then follows an empty line after compilation
Bla bla bla bla bla bla
	\begin{equation*}
		A = B.
	\end{equation*}
Bla bla bla bla bla bla

EDIT : When a say "empty line", I mean a vertical space which is too large and which looks like an empty line. I just want to reduce it. The \vspace command doesn't remove it, its removing the space after the next line only

[Cham]

Here's a compilable example. The spacing problem isn't obvious in this case, though :

Code: Select all

\documentclass[12pt,letterpaper]{article}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{amsmath}
\begin{document}

Bla bla bla bla bla bla bla bla bla :
	\begin{align}
		Axyztuv &= B + x + y \nonumber \\ \nonumber \\
		&\equiv C - 2 + 12 \nonumber \\ \nonumber \\
		&= Dx - y - z.
	\end{align}
Bla bla bla bla
	\begin{equation*}
		Axyz + 3 - y = Buvw.
	\end{equation*}
Bla bla bla bla bla

\end{document}

Now, how can I reduce the vertical space immediately after equation (1), just before the following text line ?

[Stefan Kottwitz]

You could modify \belowdisplayskip. To keep the change local, use a group or braces. For example:

Code: Select all

\begingroup
\setlength{\belowdisplayskip}{\belowdisplayshortskip}
\begin{align}
...
\end{align}
\endgroup

You could even set it to 0pt or any other value.

Stefan

[Cham]

It doesn't do anything ! Am I missing something ? What about the space parameter ?

[Stefan Kottwitz]

It works for me with your code:

Code: Select all

\documentclass[12pt,letterpaper]{article}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{amsmath}
\begin{document}
Bla bla bla bla bla bla bla bla bla :
\begingroup
\setlength{\belowdisplayskip}{0pt}
        \begin{align}
                Axyztuv &= B + x + y \nonumber \\ \nonumber \\
                &\equiv C - 2 + 12 \nonumber \\ \nonumber \\
                &= Dx - y - z.
        \end{align}
\endgroup
Bla bla bla bla
        \begin{equation*}
                Axyz + 3 - y = Buvw.
        \end{equation*}
Bla bla bla bla bla
\end{document}

Stefan

[Cham]

Aah ! Now it's working. I missed the 0pt parameter...

Thanks Stefan.