\input{mjo-common}
% The inner product between its two arguments.
-\DeclarePairedDelimiterX{\ip}[2]{ \langle }{ \rangle}{ {#1}, {#2} }
+\newcommand*{\ip}[2]{ \langle {#1}, {#2} \rangle }
% The tensor product of its two arguments.
\newcommand*{\tp}[2]{ {#1} \otimes {#2} }