Introduction

The \textbf{NConvex} package is a GAP package. Its aim is to carry out polyhedral constructions and computations, namely computing properties and attributes of cones, polyhedrons, polytopes and fans. Its has been written to provide the needed tools for the package \textbf{ToricVarieties}. All written as part of the homalg-project.

Installation The package can easily be obtained by cloning the repository \begin{center} \url{https://github.com/homalg-project/NConvex.git} \end{center} in the pkg directory of the Gap installation or your local directory for Gap packages.

Requirements Here is a list of the required Gap packages: \begin{itemize} \item The Gap package \textbf{AutoDoc} is required to create the documentation and to perform tests. A fresh version can be installed from \begin{center} \url{https://github.com/gap-packages/AutoDoc.git} \end{center} \item The Gap package \textbf{CddInterface} is required to convert between H-rep and V-rep of polyhedrons. It can be obtained at: \begin{center} \url{https://github.com/homalg-project/CddInterface.git} \end{center} \item The Gap/homalg-project package \textbf{Modules}. You can install the package by cloning the \textbf{homalg\textunderscore project} repository from \begin{center} \url{https://github.com/homalg-project/homalg_project.git} \end{center} \item The Gap package \textbf{NormalizInterface}. You can install it from \begin{center} \url{https://github.com/gap-packages/NormalizInterface.git} \end{center} \item In case \textbf{NormalizInterface} is not available, then you can use the Gap/homalg package \textbf{4ti2Interface}. It is already included in the \textbf{homalg\textunderscore project}. Make sure to accordingly change the dependencies entry in PackageInfo.g \end{itemize}