\begin{ccRefClass}{Cartesian<FieldNumberType>}
\ccInclude{CGAL/Cartesian.h}

\ccDefinition
A model for a \ccc{Kernel} using Cartesian coordinates to represent the
geometric objects.  In order for \ccRefName\ to model Euclidean geometry
in $E^2$ and/or $E^3$, for some mathematical field $E$ (\textit{e.g.},
the rationals \Q\ or the reals \R), the template parameter FieldNumberType 
must model the mathematical field $E$.  That is, the field operations on this
number type must copute the mathematically correct results.  If the number 
type provided as a model for FiedlNumberType is only an approximation of a 
field (such as the built-in type \ccc{double}), then the geometry provided by 
the kernel is only an approximation of Euclidean geometry.  

\ccIsModel
\ccRefConceptPage{Kernel}

\ccSetThreeColumns{typedef FiledNumberTypeXX}{FT;}{}
\ccTypes
\ccTypedef{typedef FieldNumberType FT;}{}
\ccGlue
\ccTypedef{typedef FieldNumberType RT;}{}

\ccImplementation
This model of a kernel uses reference counting.

\ccSeeAlso
\ccRefIdfierPage{CGAL::Simple_cartesian<FieldNumberType>}  \\
\ccRefIdfierPage{CGAL::Homogeneous<RingNumberType>} \\
\ccRefIdfierPage{CGAL::Simple_homogeneous<RingNumberType>} \\

\end{ccRefClass}