LyX ⇒ Equation numbering in appendix

[dlorenz]

Hi everyone,
I am a new user of Lyx and am trying to number equations in a technical paper. In the appendices of the paper, I would like the numbering to restart and to have the letter of the appendix before the number (ex. A.1, A.2, etc., then B.1, B.2,...) Couldn't find the way to do it in Lyx. Anyone can help????
Thanks a lot
Laura

[Stefan Kottwitz]

Hi Laura,

welcome to the board!
Which document class are you using? For instance with the report class it's the default behavior. After \appendix the equations will be numbered (A.1) and so on.

Stefan

[dlorenz]

Hi Laura,

welcome to the board!
Which document class are you using? For instance with the report class it's the default behavior. After \appendix the equations will be numbered (A.1) and so on.

Stefan

Hi Stefan,

Thanks for the reply! I'm using the article class, because I need abstract, references, etc...is there a way to do it without changing class?

Laura

[Stefan Kottwitz]

Of course it's also possible with the article class. It's just not the default behaviour.
Use this line inside your document preamble:

Code: Select all

\numberwithin{equation}{section}

The the equations will be numbered by section. Not only in the appendix, also in the main text, but I think this would be consistent.

Stefan

[Ted]

Code: Select all

\numberwithin{equation}{section}

The the equations will be numbered by section. Not only in the appendix, also in the main text, but I think this would be consistent.

Remember that \numberwithin doesn't come from LaTeX. It comes from the amsmath package.

• http://ctan.org/pkg/amsmath

So you'll need a

Code: Select all

\usepackage{amsmath}

in your preamble.

Also note that \numberwithin need not be in the preamble. Putting it just after the \appendix will number appendix equations as desired but will leave the rest of the document using the standard numbering:

Code: Select all

\appendix
\numberwithin{equation}{section}

[dlorenz]

Of course it's also possible with the article class. It's just not the default behaviour.
Use this line inside your document preamble:

Code: Select all

\numberwithin{equation}{section}

The the equations will be numbered by section. Not only in the appendix, also in the main text, but I think this would be consistent.

Stefan

Thanks!!

[dlorenz]

Code: Select all

\numberwithin{equation}{section}

The the equations will be numbered by section. Not only in the appendix, also in the main text, but I think this would be consistent.

Remember that \numberwithin doesn't come from LaTeX. It comes from the amsmath package.

• http://ctan.org/pkg/amsmath

So you'll need a

Code: Select all

\usepackage{amsmath}

in your preamble.

Also note that \numberwithin need not be in the preamble. Putting it just after the \appendix will number appendix equations as desired but will leave the rest of the document using the standard numbering:

Code: Select all

\appendix
\numberwithin{equation}{section}

--Ted

Thanks!!

[Stefan Kottwitz]

Remember that \numberwithin doesn't come from LaTeX. It comes from the amsmath package.
So you'll need a

Code: Select all

\usepackage{amsmath}

in your preamble.

I assumed amsmath would already be used when writing a technical paper. That may be set by LyX, so perhaps the line above is not needed if LyX did it. Laura, just in case: look into the menu Document -> Settings -> Math options and change "Use AMS math package automatically" to "Use AMS math package" if needed.

Stefan

[dlorenz]

Code: Select all

\numberwithin{equation}{section}

The the equations will be numbered by section. Not only in the appendix, also in the main text, but I think this would be consistent.

Remember that \numberwithin doesn't come from LaTeX. It comes from the amsmath package.

• http://ctan.org/pkg/amsmath

So you'll need a

Code: Select all

\usepackage{amsmath}

in your preamble.

Also note that \numberwithin need not be in the preamble. Putting it just after the \appendix will number appendix equations as desired but will leave the rest of the document using the standard numbering:

Code: Select all

\appendix
\numberwithin{equation}{section}

--Ted

It works perfectly!

[nolromer]

Thanks, this exactly did the trick! And it looks much better in the sections in my article as well.