Use Labels to show equations

Question

I want to be able to create many equations, say $a+b=c$ and $c+d=e$, save the equation as a variable but not have the equation be displayed. I simply want to have the ability to use the label/variable name(or perhaps another term?) to display them at a later point in the document. This is because the order of the equations will change later and I want to be able to easily move them around.

Essentially I want to see if I can define hidden variables that take theses equations and display these "variables" later in the document

Don't worry if you move equations. TeX will do the job for you. Just use \begin{equation}content...\label{key}\end{equation} and cite then with \eqref{key} (load amsmath package). — Sigur, Feb 01 '15 at 00:03
I don't want there to be a label on the side and I don't want to see the equation where I initially define it. — Borat.sagdiyev, Feb 01 '15 at 00:08
To remove the number just use the stared version equation*. But if you don't want it there so why to write it? — Sigur, Feb 01 '15 at 00:10

score 2 · Answer 1 · answered Feb 01 '15 at 07:08

2

Because the question doesn't specify the used format (LaTeX or something else) I give the format-independent answer:

\def\A{$a+b=c$}
\def\B{$c+d=e$}

Warning: The \newcommand is LaTeX specific feature.

answered Feb 01 '15 at 07:08

wipet

74,238

score 1 · Accepted Answer · answered Feb 01 '15 at 00:09

1

Just use

\newcommand\myeqA{$a+b=c$}
\newcommand\myeqB{$c+d=e$}

then when you want the first to appear, use \myeqA.

answered Feb 01 '15 at 00:09

David Carlisle

757,742

Perfect! This answers my question exactly – Borat.sagdiyev Feb 01 '15 at 00:10
Do you know if I can name a command with a numebr in it, like myeq11 or myeq24? – Borat.sagdiyev Feb 01 '15 at 00:11
No, well with a bit more work you could make the number an argument \myeq{11} or some such but only by defining commands that define and use internal commands you can not normally type, just using letters is a lot easier. Otherwise this for example or this one – David Carlisle Feb 01 '15 at 00:24

Use Labels to show equations

2 Answers2