[Tex/LaTex] remove sections numbering

sectioning

I have the next code:

\documentclass[a4paper,openright, 12pt]{article}
\usepackage[utf8]{inputenc}

\usepackage{fullpage}
\newcommand{\ssection}[1]{%
\section[#1]{\centering\normalfont\scshape #1}}
\newcommand{\ssubsection}[1]{%
\subsection[#1]{\bfseries\normalfont\scshape #1}}
\newcommand{\ssubsubsection}[1]{%
\ssubsubsection[#1]{\bfseries\normalfont\scshape #1}}

\begin{document}
\ssection{Special relativity}
  bla bla bla
\ssubsection{Lorentz's transformation}
  bla bla bla
\ssubsection{Minkowski space-time}
  bla bla bla
 \end{document}

anyone know how to remove the sections numbering?

And if I use:

\documentclass[a4paper,openright, 16pt]{article}

Why the letters are not bigger?

Best Answer

Add \setcounter{secnumdepth}{0} to preamble.

PDF no section numbering

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