TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Possible Duplicate:
How to get only one vertically centered equation number in align environment with two equations

I have a big system of equations which I want to label as one block. I do want to use align as the backbone of the typeset. I can produce, using \nonumber, something like

a &= & b \nonumber\\
x+y & & =z\nonumber\\
w =& v & \nonumber\\
1 & 2 & 3

However, this produces the label at the end, and I guess that a better look would be that the label will be typeset at the middle of the vertical height of the block. I tried to use a combination of \equation and \split but then I don't know how to take advantage of the columns available in \align.

So, how can I achieve this? If you think that this won't look good then what are the other possibilities I can take?

share|improve this question

marked as duplicate by Loop Space, Mico, cmhughes, Marco Daniel, lockstep May 12 '12 at 19:48

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

up vote 6 down vote accepted

Use the "inner" version of align

a &= & b\\
x+y & & =z\\
w =& v & \\
1 & 2 & 3
share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.