\ProvidesPackage{../preamble}

\RequirePackage{mathtools}
\RequirePackage{amsfonts}
\RequirePackage{enumitem}
% \RequirePackage[standard]{ntheorem}
\RequirePackage{amsthm}
\RequirePackage{tikz}
\RequirePackage{graphicx}
\graphicspath{ {./images/} }

\newcommand{\bydef}{\stackrel{\text{по опр.}}{\implies}} % by definition - по определению
\newcommand{\dn}{\stackrel{\text{об.}}{=}} % denote - обозначим
\newcommand{\imaginary}{\mathrm{Im} \,}
\newcommand{\real}{\mathrm{Re} \,}
\newcommand{\prop}[1]{#1^{\text{o}}}

\newcommand{\N}{\mathbb{N}}
\newcommand{\R}{\mathbb{R}}
\newcommand{\Z}{\mathbb{Z}}
\renewcommand{\C}{\mathbb{C}}
\newcommand{\bb}[1]{\mathbb{#1}}

\newcommand{\approach}[1]{\underset{#1}{\longrightarrow}}
\newcommand{\series}[1]{\displaystyle\sum_{k=1}^\infty #1}
\newcommand{\seriesx}{\displaystyle\sum_{k=1}^\infty x_k}
\newcommand{\seriespow}{\displaystyle\sum_{k=0}^\infty a_k (x - x_0)^k}
\newcommand{\abs}[1]{\left|#1\right|}
\renewcommand{\over}[2]{\stackrel{#1}{#2}}

% \theoremstyle{break}

% --- Теорема --- %
% \newtheoremstyle{break}% name
%   {}%         Space above, empty = `usual value'
%   {}%         Space below
%   {\itshape}% Body font
%   {}%         Indent amount (empty = no indent, \parindent = para indent)
%   {\bfseries}% Thm head font
%   {.}%        Punctuation after thm head
%   {\newline}% Space after thm head: \newline = linebreak
%   {}%         Thm head spec
% \theorembodyfont{\normalfont}
% \theoremstyle{break}
\newtheorem{theorem}{Теорема}[subsection]
% --------------- %

% --- Определение --- %
% \theorembodyfont{\normalfont}
\theoremstyle{definition}
\newtheorem{definition}{Определение}[subsection]
% ------------------- %


% --- Пример --- %
\theoremstyle{definition}
\newtheorem*{example}{Пример}
% -------------- %

% --- Следствие --- %
\theoremstyle{definition}
\newtheorem*{corollary}{Следствие}
% ----------------- %

% --- Замечание --- %
\theoremstyle{definition}
\newtheorem*{remark}{Замечание}
% ----------------- %


% --- Лемма --- %
\theoremstyle{definition}
\newtheorem*{lemma}{Лемма}
% ----------------- %