IncidenceMatrix[g] gives the vertex-edge incidence matrix of the graph g.
Infinity or \[Infinity] is a symbol that represents a positive infinite quantity.
Information[symbol] prints information about a symbol.
Inner
(Built-in Mathematica Symbol) Inner[f, list_1, list_2, g] is a generalization of Dot in which f plays the role of multiplication and g of addition.
IntegerDigits[n] gives a list of the decimal digits in the integer n. IntegerDigits[n, b] gives a list of the base b digits in the integer n. IntegerDigits[n, b, len] pads ...
InterpolatingFunction[domain, table] represents an approximate function whose values are found by interpolation.
InterpolationOrder is an option for Interpolation, as well as ListLinePlot, ListPlot3D, ListContourPlot, and related functions, that specifies what order of interpolation to ...
InverseFourierSequenceTransform[expr, \[Omega], n] gives the inverse discrete-time Fourier transform of expr.InverseFourierSequenceTransform[expr, {\[Omega]_1, \[Omega]_2, \ ...
InverseLaplaceTransform[expr, s, t] gives the inverse Laplace transform of expr. InverseLaplaceTransform[expr, {s_1, s_2, ...}, {t_1, t_2, ...}] gives the multidimensional ...
Inverse
(Built-in Mathematica Symbol) Inverse[m] gives the inverse of a square matrix m.