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simplify
Simplify the scalar part of an expression.
When expressions (or sub-expressions) involve scalars, simplification of such expressions can be
'outsourced' to an external scalar computer algebra system, at present either Sympy or Mathematica.
The simplify algorithm finds all scalar sub-expressions and runs the simplification algorithm
of one of these systems on them.ex:= (\sin{x}**2 + \cos{x}**2) A_{m};
\(\displaystyle{}\left({\left(\sin{x}\right)}^{2}+{\left(\cos{x}\right)}^{2}\right) A_{m}\)
((\sin(x))**2 + (\cos(x))**2) A_{m}
simplify(_);
\(\displaystyle{}A_{m}\)
A_{m}
By default it will use the Sympy backend, but if you have compiled Cadabra on a system which has Mathematica installed,
you can also switch it to use Mathematica instead, by using
kernel(scalar_backend="mathematica")