linesys

linesys is a LaTeX package for converting augmented-matrix-style input into systems of linear equations or inequalities, and coefficient rows into linear expressions.

Requirements

The package loads:

• amsmath
• xparse
• tikz

TikZ is used by the built-in \linesyscircled pivot highlighter selected by pivots=true.

Minimal example

\documentclass{article}
\usepackage{linesys}

\begin{document}
\[
\begin{linesys}
  2&-1&3\\
  0&4&-2
\end{linesys}
\]

Inline: \linexpr{1&2&-3}.
\end{document}

The full user documentation is linesys-manual.pdf.

Building and testing

The project uses l3build:

l3build check
l3build doc
l3build ctan

l3build check runs the focused regression suite under pdfTeX, LuaTeX, and XeTeX. linesys-regression.tex is the larger visual regression document used for typography-sensitive checks that are not well represented by log output.

Author and maintainer

Fernando de Lacerda Mortari Department of Mathematics, Federal University of Santa Catarina (UFSC) fernando.mortari@ufsc.br

License

LaTeX Project Public License (LPPL), version 1.3c or later. See LICENSE.

Authorship and assistance

The package was designed and authored by Fernando de Lacerda Mortari. Implementation, testing, and documentation have been carried out with assistance from OpenAI's ChatGPT.