# Increasing the space between the following two lines

How to increase the space between the following two lines?

Here is what I have tried:

\documentclass{beamer}
\usepackage[T1]{fontenc}
%-----
\usepackage{amsmath,amssymb,amsfonts}
\usepackage{pifont}
\begin{document}
\begin{frame}
\centerline{\ding{45} $\mathcal{N}(T)$ is called the null space of $T$.}
\ding{43} The range of $T$ is given by
\end{frame}
\end{document}


Have you tried adding \vspace{1cm} before \ding{43}? Change value 1cm for your needs ...

See the following mwe

\documentclass{beamer}

\usepackage[T1]{fontenc}

\usepackage{amsmath,amssymb,amsfonts}
\usepackage{pifont}

\begin{document}
\begin{frame}
\centerline{\ding{45} $\mathcal{N}(T)$ is called the null space of $T$.}
\vspace{1cm} % <======================================================
\ding{43} The range of $T$ is given by
\end{frame}
\end{document}


and its result:

There are two ways: if you are going to use \centerline frequently throughout your presentation, then I suggest to redefine it as:

\renewcommand{\centerline}[1]{\null\hfill#1\hfill\null~\\[2ex]}


The second way is to use ~\ right after \centerline{...}, i.e., \centerline{...}~\\

\documentclass{beamer}
\usepackage[T1]{fontenc}
%-----
\usepackage{amsmath,amssymb,amsfonts}
\usepackage{pifont}
\centerline{\ding{45} $\mathcal{N}(T)$ is called the null space of $T$.}
% \centerline{\ding{45} $\mathcal{N}(T)$ is called the null space of $T$.}~\\
\ding{43} The range of $T$ is given by