# Left and right braces on different lines of align [duplicate]

\documentclass[a4paper,12pt]{article}

\usepackage{amsmath}

\begin{document}

\begin{align}
A = \max\left{B \\
& C \right}.
\end{align}

\end{document}


My expressions B and C are so long that they need to be on different lines. But then TeX doesn't accept left and right braces being on different lines. What can I do?

## marked as duplicate by Werner, Jesse, cmhughes, Malipivo, Torbjørn T.May 16 '14 at 5:01

• Please help us to help you and add a minimal working example (MWE) that illustrates your problem. It will be much easier for us to reproduce your situation and find out what the issue is when we see compilable code, starting with \documentclass{...} and ending with \end{document}. In case the OP posted some code that isn't an MWE: – user31729 May 16 '14 at 3:43
• – Werner May 16 '14 at 3:46
• @ChristianHupfer Added MWE. – boaten May 16 '14 at 3:57
• @Werner It seems \bigl does not work with braces. – boaten May 16 '14 at 3:57
• Oh okay, I also need backslash in front of brace. It works now with \bigl. – boaten May 16 '14 at 4:00

Braces go by pairs, you have to close or open a fake one to balance them before change line.

\documentclass[a4paper,12pt]{article}

\usepackage{amsmath}

\begin{document}

\begin{align}
A = \max\left\{B\right. \\
& \left.C \right\}.
\end{align}

\end{document}

• Try \max\left\{B\frac{a}{b}\right. \\ & \left.C \right\}. – Torbjørn T. May 16 '14 at 5:05