S
S(
*names,
is_symmetric=None,
is_antisymmetric=None,
is_cyclesymmetric=None,
is_linear=None,
is_scalar=None,
is_real=None,
is_integer=None,
is_positive=None,
tags=None,
custom_normalization=None,
custom_print=None,
custom_derivative=None,
)Shorthand notation for :func:Expression.symbol.