Sstrhsrtj

I'm working on an article and I don't want to number my sections. However, I do want my subsections and subsubsections to be numbered.
Right now my document has this numbering, but the 0 in 0.X.Y should not be there. How can I fix that?

Currently:

Section

0.1 subsection

0.2 subsection

0.2.1 subsubsection

0.3 subsection



Should be:

Section

1. subsection

2. subsection

2.1 subsubsection

3. subsection

This is my code:

documentclass{article}



begin{document}



section*{Section}



subsection{subsection}



subsection{subsection}



subsubsection{subsubsection}

blah

subsection{subsection}



end{document}

PS: I did search a on the web and found a lot on this topic, but not a solution to this particular thing.

If you're interested in printing section{<heading>} in a similar way that section*{<heading>} would print (that is, flush left and not indented), then titlesec provides an easy interface:

documentclass{article}

usepackage{titlesec}% http://ctan.org/pkg/titlesec

titleformat{section}%

  [hang]% <shape>

  {normalfontbfseriesLarge}% <format>

  {}% <label>

  {0pt}% <sep>

  {}% <before code>

renewcommand{thesection}{}% Remove section references...

renewcommand{thesubsection}{arabic{subsection}}%... from subsections

begin{document}



section{First section}

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam sollicitudin rutrum tellus, 

eu luctus dolor commodo eu. Integer pellentesque mollis congue.



subsection{First subsection}

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam sollicitudin rutrum tellus, 

eu luctus dolor commodo eu. Integer pellentesque mollis congue.



subsection{Second subsection}

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam sollicitudin rutrum tellus, 

eu luctus dolor commodo eu. Integer pellentesque mollis congue.



subsubsection{First subsubsection}

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam sollicitudin rutrum tellus, 

eu luctus dolor commodo eu. Integer pellentesque mollis congue.



subsection{Last subsection}

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam sollicitudin rutrum tellus, 

eu luctus dolor commodo eu. Integer pellentesque mollis congue.



section{Second section}

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam sollicitudin rutrum tellus, 

eu luctus dolor commodo eu. Integer pellentesque mollis congue.



subsection{First subsection}

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam sollicitudin rutrum tellus, 

eu luctus dolor commodo eu. Integer pellentesque mollis congue.



end{document}​

This just sets the label separator between the section number and title to 0pt, as well as not printing the number. normalfontbfseriesLarge is the default formatting for article.

Note: I rewrote this answer significantly after becoming aware of Ulrike Fisher's comment to @knut's answer.

There are two steps that need to be taken. The first, straightforward step consists of redefining the thesubsection macro. The second, less obvious step involves a redefinition of the LaTeX internal macro @seccntformat, as is explained in the book The LaTeX Companion, 2nd ed. The following MWE applies both steps:

documentclass{article}



renewcommand{thesubsection}{arabic{subsection}}

makeatletter

def@seccntformat#1{@ifundefined{#1@cntformat}%

   {csname the#1endcsnamequad}%       default

   {csname #1@cntformatendcsname}}%    enable individual control

newcommandsection@cntformat{}

makeatother



begin{document}

section{First Section}

subsection{First subsection}

subsection{Second subsection}

subsubsection{First subsubsection}

subsection{Third subsection}

section{Second Section}

subsection{A new subsection}

end{document}

Does this works for you:

documentclass{article}



begin{document}



part*{Section}



section{subsection}



section{subsection}



subsection{subsubsection}

blah

section{subsection}



end{document}

Or is there a special reason, why you need sections as sections and subsections as subsection?

Alternative:

documentclass{article}



renewcommand{thesection}{}

renewcommand{thesubsection}{arabic{subsection}}



begin{document}



section{Section}



subsection{subsection}



subsection{subsection}



subsubsection{subsubsection}

blah

subsection{subsection}



section{Section 2}



subsection{subsection 2}

This subsection starts again with 1.





end{document}