BenfordDistribution[b] represents a Benford distribution with base parameter b.
FindArgMax[f, x] gives the position x_max of a local maximum of f.FindArgMax[f, {x, x_0}] gives the position x_max of a local maximum of f, found by a search starting from ...
FindMaxValue[f, x] gives the value at a local maximum of f.FindMaxValue[f, {x, x_0}] gives the value at a local maximum of f, found by a search starting from the point x = ...
FindMinValue[f, x] gives the value at a local minimum of f.FindMinValue[f, {x, x_0}] gives the value at a local minimum of f, found by a search starting from the point x = ...
BooleanGraph[bfunc, g_1, ..., g_n] gives the Boolean graph defined by the Boolean function bfunc on the graphs g_1, ..., g_n.
Select
(Built-in Mathematica Symbol) Select[list, crit] picks out all elements e_i of list for which crit[e_i] is True. Select[list, crit, n] picks out the first n elements for which crit[e_i] is True.
ErrorBarFunction is an option for ErrorListPlot that specifies a function to apply to determine the shape of error bars.
Laplacian[f] gives the Laplacian, \[Del]^2 f, of the scalar function or vector field f in the default coordinate system. Laplacian[f, coordsys] gives the Laplacian of f in ...
ImageFilter[f, image, r] applies the function f to the range r neighborhood of each pixel in each channel of image.
NHoldRest is an attribute which specifies that all but the first argument to a function should not be affected by N.