\DeclareMathOperator{\Arctan}{Arctan}
\DeclareMathOperator{\Arcsin}{Arcsin}
\DeclareMathOperator{\Artanh}{Artanh}
\DeclareMathOperator{\Real}{Re}
\DeclareMathOperator{\Image}{Im}
\DeclareMathOperator{\Det}{Det}
\DeclareMathOperator{\Trace}{Tr}
\DeclareMathOperator{\Ger}{span}
\DeclareMathOperator{\Span}{span}
\DeclareMathOperator{\Dim}{dim}


