# Referring to a complete subequation environment. Is there a recommended style? [closed]

I have a subequations environment which is labelled and inside it I have an alignat environment which has a label for each line.

Would you say it is ok to refer to the complete model as I do it in the MWE, because the concrete label (0.1) cannot be found directly as equation number? Or is there a better way to refer to the complete model, except referring to the range of equations like (0.1a)--(0.1b)?

MWE:

\documentclass{scrbook}
\usepackage{amsmath}

\begin{document}
I'm referring to the complete model \eqref{eq:MainLabel} and here to the restrictions \eqref{eq:Sub1} and \eqref{eq:Sub2}
\begin{subequations}
\label{eq:MainLabel}
\begin{alignat}{2}
\sum_{m \in M}  x_m     & = 1      & \quad & , \forall m \in M \colon a \neq b  \label{eq:Sub1} \\
x_m     & = 1      && , \forall m \in M \colon e \neq f \label{eq:Sub2}
\end{alignat}
\end{subequations}
\end{document}


## closed as off-topic by egreg, cfr, Joseph Wright♦Apr 11 '15 at 22:27

This question appears to be off-topic. The users who voted to close gave this specific reason:

• "This question does not fall within the scope of TeX, LaTeX or related typesetting systems as defined in the help center." – egreg, cfr, Joseph Wright
If this question can be reworded to fit the rules in the help center, please edit the question.

• there's a brief "recommendation" in the amsmath users guide (texdoc amsmath) in section 3.11.3. actually, it's more a description of what happens with the example shown. there's a slightly longer example in the "short math guide" on page 3. – barbara beeton Sep 7 '14 at 12:44
• Is this a question about how to set up TeX and friends in order to cross-reference such a group of equations, or is it about mathematical terminology, i.e., about what to call such a group of equations? – Mico Nov 29 '14 at 16:57
• @Mico Such a group of equations I usually call mathematical program. My question is about how to cross-reference the complete program in (La)TeX. The problem is if you reference the main label (eq:MainLabel) you get an equation number which is not printed within the document directly. So maybe just give the program a name like DLSP and refer to it with the name. But I would prefer a solution with an equation number which is also printed near the program. – user2653422 Nov 30 '14 at 10:08