notes.sty

\ProvidesPackage{notes}

\usepackage[
    a4paper,
    margin=2cm,
    includehead,
    headsep=\baselineskip,
]{geometry}

\usepackage[T2A]{fontenc}
\usepackage{hyphenat}
\usepackage[english, russian]{babel}

\usepackage[
    protrusion=true,
    activate={true,nocompatibility},
    final,
    tracking=true,
    kerning=true,
    spacing=true,
    factor=1100]{microtype}
\SetTracking{encoding={*}, shape=sc}{40}

\usepackage{multirow}
\usepackage[bottom]{footmisc}
\usepackage{etaremune}
\usepackage{booktabs}
\usepackage{tabularx}
\usepackage{esvect}
\usepackage{mathtools}
\usepackage{amssymb}
\usepackage[hidelinks]{hyperref}
\usepackage{siunitx}
\usepackage[skip=.625\baselineskip plus 2pt]{parskip}
\usepackage{enumitem}
\usepackage{float}
\usepackage{graphicx}
\usepackage{xurl}
\usepackage{blkarray}
\usepackage{quoting}
\usepackage{tikz}
\usepackage{caption}
\usepackage{titlesec}
\usepackage{fancyhdr}
\usepackage{setspace}
\usepackage{ifthen}
\usepackage{subcaption}

\counterwithin{figure}{section}
\counterwithin{equation}{section}
\counterwithin{table}{section}

% Избегание разрыва страницы перед списком
\makeatletter
\@beginparpenalty=10000
\makeatother

% Использование кириллических букв на втором уровне нумерованных списков
\makeatletter
\AddEnumerateCounter{\asbuk}{\russian@alph}{щ}
\makeatother
\setlist[enumerate,2]{label={\asbuk*)}}
\renewcommand\thesubfigure{\asbuk{subfigure}}

% Отключение нумерации секций
\makeatletter
\renewcommand{\@seccntformat}[1]{%
    \ifcsname prefix@#1\endcsname
        \csname prefix@#1\endcsname
    \else
        \csname the#1\endcsname\quad
    \fi}
\newcommand\prefix@section{}
\newcommand\prefix@subsection{}
\newcommand\prefix@subsubsection{}
\makeatother

\makeatletter
\let\latexl@section\l@section
\def\l@section#1#2{\begingroup\let\numberline\@gobble\latexl@section{#1}{#2}\endgroup}
\makeatother

\makeatletter
\let\latexl@subsection\l@subsection
\def\l@subsection#1#2{\begingroup\let\numberline\@gobble\latexl@subsection{#1}{#2}\endgroup}
\makeatother

\makeatletter
\let\latexl@subsubsection\l@subsubsection
\def\l@subsubsection#1#2{\begingroup\let\numberline\@gobble\latexl@subsubsection{#1}{#2}\endgroup}
\makeatother

% Шапка
\AtBeginDocument{
    \pagestyle{fancy}
    \renewcommand{\sectionmark}[1]{\markboth{#1}{}}
    \fancyhead{}
    \fancyhead[L]{\leftmark}
    \fancyhead[R]{\thepage}
    \fancyfoot{}
}

\setlength{\headheight}{17.0pt}

\newenvironment{dd}[1]{
    \vskip.2\baselineskip
    \begin{minipage}{\textwidth}
        \begin{quoting}
            \textbf{Определение}.\kern4pt#1}{
        \end{quoting}
    \end{minipage}
    \vskip.2\baselineskip
}

\newcommand{\image}[3]{
    \begin{figure}[!htb]
        \centering
        \includegraphics[width=#1]{#2}
        \ifthenelse{\equal{#3}{}}{}{\caption{#3}}
        \label{img:#2}
    \end{figure}
}