# Large braces to specify condition in a set

How do I define this in LaTeX - I am writing a description of a set, and I need huge braces because I have lot of clauses to fit in, and it will take more than 1 line. For example:

A = \{ (x,y,z) : \exists ... \forall ... (big definition of a graph)\}

## 3 Answers

Using the amsmath package, the proper solution would be to break the long definition using multline (or multline* for no equation number):

\begin{multline}
A = \{ (x, y, z) \colon \exists \dots \forall \dots \\
\text{(your big definition of a graph goes here)} \}
\end{multline}


If you insist on having large braces around the definition of your set you can use something like:

\begin{equation}
A = \left\{
\begin{aligned}
&(x, y, z) \colon \exists \dots \forall \dots \\
&\text{(your big definition of a graph goes here)}
\end{aligned}
\right\}
\end{equation}


In your preamble:

\usepackage{braket} % needed for \Set


In your math mode:

A = \Set{ (x,y,z) : \exists ... \forall ... (big definition of a graph)}

• This is a great answer since it makes the '(x,y,z)' centered in the vertical direction. In addition one may add arrays of conditions in place of the 'big definition'. – np8 Sep 30 '16 at 21:58

For one line, you can use

\left\{ (x,y,z) : bla bla \right\}


For multiple lines, for example

\begin{align*}
& \left\{ (x,y,z) : bla bla \right. \\
& \hspace{1cm} \left. bla bla bla \right\}
\end{align*}