Complexes represents the domain of complex numbers, as in x \[Element] Complexes.
ControllableModelQ[ss] yields True if the StateSpaceModel object ss is controllable, and False otherwise.
Depth
(Built-in Mathematica Symbol) Depth[expr] gives the maximum number of indices needed to specify any part of expr, plus 1.
FindGeneratingFunction[{a_1, a_2, ...}, x] attempts to find a simple generating function in x whose n\[Null]^th series coefficient is a_n.FindGeneratingFunction[{{n_1, a_1}, ...
Find
(Built-in Mathematica Symbol) Find[stream, " text"] finds the first line in an input stream that contains the specified string. Find[stream, {"text_1", "text_2", ...}] finds the first line that contains ...
FourierParameters is an option to Fourier and related functions that specifies the conventions to use in computing Fourier transforms.
GeneratedParameters is an option that specifies how parameters generated to represent the results of various symbolic operations should be named.
GraphStyle is an option to Graph and related objects that specifies styles to use for the different graph elements.
GroupCentralizer[group, g] returns the centralizer of the element g in group.
HarmonicMean[list] gives the harmonic mean of the values in list.