definitions.tex

\usepackage{enumerate}

%%%%% Theorem Styles %%%%
\usepackage{amsthm}
\newtheoremstyle{prbstyle}
{10mm}                % Space above
{5mm}                % Space below
{\upshape}        % Theorem body font % (default is "\upshape")
{}                % Indent amount
{\bfseries}       % Theorem head font % (default is \mdseries)
{.\newline}               % Punctuation after theorem head % default: no punctuation
{5mm}               % Space after theorem head
{}                % Theorem head spec

\newtheoremstyle{excstyle}
{5mm}                % Space above
{10mm}                % Space below
{\upshape}        % Theorem body font % (default is "\upshape")
{}                % Indent amount
{\bfseries}       % Theorem head font % (default is \mdseries)
{.\newline}               % Punctuation after theorem head % default: no punctuation
{10mm}               % Space after theorem head
{}    

%%%%%%%%%%%%%%%%%%%%%%%%%%

\newtheorem{mytheo}{Theorem}



%%%% Theorem Enviroments %%%%
\theoremstyle{prbstyle}
\newtheorem{problem}{Задача}[section]
\theoremstyle{excstyle}
\newtheorem{exc}{Exercise}[section]
\newtheorem{prop}{Proposition}[section]
\newtheorem{solution}{Решение}[section]
\newtheorem{thm}{Theorem}[section]
\newtheorem{heur}{Heuristic}[section]

%%%%%%%%Enviroments%%%%%%%%%
\newenvironment{prb}
{\begin{tcolorbox}
	\begin{problem}}
{
\end{problem}
\end{tcolorbox}
\par\noindent\hrulefill}


\newenvironment{sol}
{\begin{solution}}
	{\par\noindent\hrulefill
\end{solution}}



%%%%  New Commands%%%%
\newcommand{\Probab}{\mathbb{P}}
\newcommand{\Expec}[1]{\mathbb{E}\left[{#1}\right]}
\newcommand*\diff[1]{\mathop{}\!\mathrm{d}{#1}}

%%%%




%%%%%%
\DeclareMathOperator{\Tr}{Tr}
\DeclareMathOperator{\rk}{rk}
\DeclareMathOperator{\Img}{Im}
\DeclareMathOperator{\Ker}{Ker}
%If you want to change language for specific part 
%\selectlanguage{russian}
%%%%%%%