# How to make big parenthesis in equation? I am learning how to make like this, would you mind guys to help me? I just can't make a big parenthesis like this one. Thanks in advance.

• Please add a compilable code showing what you have tried so far
– user156344
May 18 '19 at 6:08
• \big(, \bigr), \Bigl(, \biggl(, \left(, \right), etc. see en.wikibooks.org/wiki/LaTeX/Mathematics May 18 '19 at 6:11

for showed example you not need any special parenthesis:

\documentclass{article}
\usepackage{amsmath}

\begin{document}
$(f \text{ continuous}) \Leftrightarrow \begin{pmatrix} \forall f(x) \in X\ \forall V\ni f(x) \\ \exists U \ni x \text{ such that } f(U)\subset C \end{pmatrix}$
\end{document} The mathtools package defines an optional argument for the column alignment in its matrix* environments:

\documentclass{article}
\usepackage{mathtools}

\begin{document}

$(f \text{ continuous }) \Leftrightarrow \begin{pmatrix*}[l] \,\forall f(x) \in X\ \forall V\ni f(x) \\ \, \exists U \ni x \text{ such that } f(U)\subset C \end{pmatrix*}$

\end{document} use

\documentclass{standalone}
\usepackage{amsmath}

\begin{document}
$\left(\begin{matrix} \mbox{first row}\\ \mbox{second row} \end{matrix}\right)$
\end{document} The construct gathered from amsmath is the main ingredient below with brackets around provided by \left(...\right). Note also correct spacing of quantifiers, as given in https://tex.stackexchange.com/a/115451/15925 \documentclass{article}

\usepackage{amsmath}

\DeclareMathOperator{\Exists}{\exists}
\DeclareMathOperator{\Forall}{\forall}

\begin{document}

\begin{equation*}
(f\ \text{continuous})
\iff
\left(
\begin{gathered}
\Forall f(x) \in X \quad \Forall V\ni f(x) \\
\Exists U \ni x\ \text{such that}\ f(U)\subset C
\end{gathered}
\right)
\end{equation*}

\end{document}