LaTeX

Used Packages
Packages 
 fontspec \usepackage{fontspec} 
 Advanced Font Selection: Allows you to use any OpenType or TrueType font installed on your system. Note that this requires compiling with XeLaTeX or LuaLaTeX instead of pdfLaTeX. 
 babel-czech \usepackage[czech]{babel} 
 Czech Localization: Provides Czech-specific hyphenation patterns, translated document strings (like "Obsah" instead of "Table of Contents"), and support for Czech quotes. 
 amsmath \usepackage{amsmath} 
 Mathematical Enhancements: The industry standard for math typesetting, providing superior alignment for multi-line equations and advanced mathematical structures. 
 amsfonts \usepackage{amsfonts} 
 AMS Fonts: Provides a broad range of mathematical fonts, including the necessary glyphs for "blackboard bold" characters like the sets of real or natural numbers. 
 amssymb \usepackage{amssymb} 
 Extended Symbol Set: Grants access to a vast collection of mathematical symbols that are not included in the standard LaTeX base. 
 amsthm \usepackage{amsthm} 
 Theorem Styling: Provides a flexible mechanism for defining and styling "Theorem," "Lemma," "Definition," and "Proof" environments with consistent formatting. 
 graphicx \usepackage{graphicx} 
 Image Handling: The essential package for inserting external graphics (PNG, JPG, PDF) into your document, allowing for scaling, rotating, and cropping. 
 xcolor \usepackage{xcolor} 
 Color Management: Extends LaTeX’s ability to handle colors, allowing for custom color definitions, colored text, and background shading for table rows or boxes. 
 url \usepackage{url} 
 URL Formatting: Specifically designed for typesetting web addresses. It ensures URLs use a monospaced font and "break" naturally at the end of lines without breaking the link. 
 textcomp \usepackage{textcomp} 
 Extended Text Symbols: Provides support for the TS1 encoding, which includes extra symbols like the Euro sign (€), copyright symbols, and musical notes. 
 parskip \usepackage{parskip} 
 Paragraph Spacing: Modernizes the document layout by adding vertical space between paragraphs and removing the standard first-line indentation. 
 booktabs \usepackage{booktabs} 
 Professional Tables: Provides high-quality horizontal rules (\toprule, \midrule, \bottomrule) to create clean, publication-quality tables without the need for ugly vertical lines. 
 icomma \usepackage{icomma} 
 Czech Number Format: Fixes the math-mode spacing issue where LaTeX normally treats a comma as a separator (adding a space), allowing it to act correctly as a decimal point (e.g., 0,03). 
 Installation 
 Debian / Ubuntu 
 sudo apt update
sudo apt install texlive-latex-recommended texlive-latex-extra texlive-lang-czechslovak texlive-xetex
 
 or the full package (large download) 
 sudo apt update
sudo apt install texlive-full
 
 Fedora 
 sudo dnf install 'tex(fontspec.sty)' 'tex(babel-czech)' 'tex(amsmath.sty)' \
'tex(amsfonts.sty)' 'tex(amssymb.sty)' 'tex(amsthm.sty)' 'tex(graphicx.sty)' \
'tex(xcolor.sty)' 'tex(url.sty)' 'tex(textcomp.sty)' 'tex(parskip.sty)' \
'tex(booktabs.sty)' 'tex(icomma.sty)'
 
 or 
 sudo dnf install texlive-collection-latexrecommended texlive-collection-latexextra texlive-collection-langczechslovak texlive-xetex-bin
 
 or the full package (large download) 
 sudo dnf install texlive-scheme-full