GeoProjectionData["projection", " property"] gives the value of the specified property for the specified cartographic projection.GeoProjectionData["projection"] gives the ...
IntegerPart[x] gives the integer part of x.
InverseFourier[list] finds the discrete inverse Fourier transform of a list of complex numbers.
NProduct[f, {i, i_min, i_max}] gives a numerical approximation to the product \[Product]i = i_min i_max f.NProduct[f, {i, i_min, i_max, di}] uses a step di in the product.
NSum
(Built-in Mathematica Symbol) NSum[f, {i, i_min, i_max}] gives a numerical approximation to the sum \[Sum]i = i_min i_max f.NSum[f, {i, i_min, i_max, di}] uses a step di in the sum.
PolarTicks is an option for sector charts and polar plots that specifies tick marks for polar axes.
RankedMax[list, n] gives the n\[Null]^th largest element in list.
RankedMin[list, n] gives the n\[Null]^th smallest element in list.
RowReduce[m] gives the row-reduced form of the matrix m.
Sign
(Built-in Mathematica Symbol) Sign[x] gives -1, 0, or 1 depending on whether x is negative, zero, or positive.