Cadabra manual: SelfNonCommuting

SelfNonCommuting

Make tensor components non-commuting.

Used to make objects with indices non-commuting when their index values are different. See SelfAntiCommuting for more information.

A_{m}::SelfNonCommuting. ex:= A_{n} A_{a} A_{m}; sort_product(_);

$\displaystyle{}A_{n} A_{a} A_{m}$