[Tex/LaTex] Customise the own subsubsection numbers

Question

I am trying to write a thesis and would like to number the subsubsection titles within a section easily so I can refer to them nicely and easily later on in the document.

Here is what I have at the moment:

\documentclass[10pt]{article}
\usepackage{amsmath, amsthm, amssymb, amsfonts}
\usepackage{fancyhdr, graphicx}
\usepackage[width=5.5in, height=8in]{geometry}

\begin{document}

\section{Exact Solutions of the Navier-Stokes Equations}

Intro.

\subsubsection{Solution 1: Description}

Solution 1

\subsubsection{Solution 2: Description}

Solution 2

\subsubsection{Solution 3: Description}

Solution 3

\end{document}

and the output comes out as:

1.0.1 Solution 1: Description

Solution 1

1.0.2 Solution 2: Description

Solution 2

but what I'd like is to have it appear as:

Solution 1: Description

Solution 1

Solution 2: Description

Solution 2

such that the part "Solution i" becomes the number – if that makes sense.

The reason I want to do this is so that: 1 – it looks nice, and 2 – so that I can use a \label and \ref later on so I can refer back to them later on in the document.

Answer 1

Here's an example that 'automatically' redefines the subsubsection header number format and numbering and restores it with the next \section.

I also used \cleveref so refer to the subsubsection as a Solution and not as a subsubsection.

\documentclass[10pt]{article}
\usepackage{amsmath, amsthm, amssymb, amsfonts}
\usepackage{fancyhdr, graphicx}
\usepackage{xpatch}
\usepackage[width=5.5in, height=8in]{geometry}

\usepackage{cleveref}


\makeatletter
\let\latexthesubsubsection\thesubsubsection
\let\latex@@seccntformat\@seccntformat

\newcommand{\othersubsubformat}{%
  \renewcommand{\thesubsubsection}{Solution \arabic{subsubsection}}
  \def\@seccntformat##1{\csname the##1\endcsname:\ }
}
\newcommand{\restoresubsubformat}{%
\let\@seccntformat\latex@@seccntformat
\let\thesubsubsection\latexthesubsubsection
}

\xpretocmd{\section}{\restoresubsubformat}{}{}

\begin{document}



\section{Exact Solutions of the Navier-Stokes Equations}



\othersubsubformat

Intro.

We have a nice solution in \ref{solution:3}

\subsubsection{Description}

Solution 1

\subsubsection{Description}

Solution 2

\subsubsection{Description} \label[Solution]{solution:3}

Solution 3


\section{Other stuff}

\subsection{Foo}
\subsubsection{Foobar}

\end{document}