AlgebraicNumberDenominator[a] gives the smallest positive integer n such that n a is an algebraic integer.

BottomHatTransform[image, ker] gives the morphological bottom-hat transform of image with respect to structuring element ker.BottomHatTransform[image, r] gives the bottom-hat ...

CellEventActions is an option for Cell that gives a list of actions to perform when specified events occur in connection with a cell in a notebook.

CellGroup[{cell_1, cell_2, ...}] gives an open group of cells that can appear in a Mathematica notebook.CellGroup[{cell_1, cell_2, ...}, 1] gives a cell group in which only ...

CellLabelAutoDelete is an option for Cell which specifies whether a label for the cell should be automatically deleted if the contents of the cell are modified or the ...

Clip[x] gives x clipped to be between -1 and +1. Clip[x, {min, max}] gives x for min <= x <= max, min for x < min and max for x > max. Clip[x, {min, max}, {v_min, v_max}] ...

ConditionalExpression[expr, cond] is a symbolic construct that represents the expression expr when the condition cond is True.

ControllerPath is an option that gives a list of external controllers or classes of controllers to try for functions such as ControllerState, Manipulate, and Graphics3D.

Except[c] is a pattern object which represents any expression except one that matches c. Except[c, p] represents any expression that matches p but not c.

False is the symbol for the Boolean value false.