Take the 2-minute tour ×
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.

I'm trying to write an expression in math mode similar to this formula:

enter image description here

My LaTeX expression looks like this:

\min \| \begin{array}{c} ... \end{array} \|

but it happens that the double lines are short:

enter image description here

How can I extend the double vertical bar?

share|improve this question

1 Answer 1

up vote 8 down vote accepted

Use the \left ... \right construction. See page 60 and table 3.8 of the Not so short intro. to LaTeX for further details.

\min \left\| \begin{bmatrix} A\\ \vdots \\ C\end{bmatrix} \right\|

enter image description here

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

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