PackedArrayForm[expr] prints with packed arrays in expr shown in summary form, without all their elements explicitly given.
Characteristic[f] gives the characteristic of the field f.
ReduceElement[e] gives a field element in reduced form.
MiniMaxApproximation[expr, {x, {x_0, x_1}, m, n}] finds the rational polynomial function of x, with numerator order m and denominator order n, that gives a mini-max ...
ActiveInputAliases[] returns a list of all active aliases in the current notebook. ActiveInputAliases[notebook] returns a list of all active aliases in the notebook notebook.
RemoveInfixNotation[op, func] removes the infix operator op.
RemoveSymbolize[boxes] removes the symbolization of boxes.
SolarSchwarzschildRadius is a physical constant.
WeakMixingAngle is a physical constant.
AbsIJK
(Quaternions Package Symbol) AbsIJK[q] gives the absolute value of the pure quaternion part of q.