[Tex/LaTex] How to make \Rightarrow bold

Question

I tried doing, \mathbf{\Rightarrow}, but nothing happens.

How do I make the \Rightarrow symbol bold?

Answer 1

Here is a way with which you can make any symbol fat: use the contour package.

\documentclass{article}
\usepackage{amsmath}
\usepackage[outline]{contour}
\begin{document}
\begin{enumerate}
\item Just the symbol:
\contour{black}{$\Rightarrow$}

\item The symbol between two bold symbols:
$\boldsymbol{A}\mathrel{\contour{black}{${\Rightarrow}$}}\boldsymbol{B}$

\item Using \texttt{contour} for everything:
\contour{black}{$A\Rightarrow B$}

\item \verb|\contourlength{0.02em}|:
\bgroup\contourlength{0.02em}\contour{black}{$A\Rightarrow B$}\egroup

\item \verb|\contourlength{0.01em}|:
\bgroup\contourlength{0.01em}\contour{black}{$A\Rightarrow B$}\egroup

\item Other symbols:
\contour{black}{$A\Leftarrow B=C\ne D$}
\end{enumerate}
\end{document}