DownValues[f] gives a list of transformation rules corresponding to all downvalues defined for the symbol f.
E
(Built-in Mathematica Symbol) E is the exponential constant E (base of natural logarithms), with numerical value \[TildeEqual] 2.71828.
ExpandDenominator[expr] expands out products and powers that appear as denominators in expr.
Exponent[expr, form] gives the maximum power with which form appears in the expanded form of expr. Exponent[expr, form, h] applies h to the set of exponents with which form ...
ExportString[expr, " format"] generates a string corresponding to expr exported in the specified format. ExportString[rules, {"format", "Rules"}] gives explicit rules for ...
FactorSquareFree[poly] pulls out any multiple factors in a polynomial.
FindGraphIsomorphism[g_1, g_2] finds an isomorphism that maps the graph g_1 to g_2 by renaming vertices.
FiniteAbelianGroupCount[n] gives the number of finite Abelian groups of order n.
FrameTicksStyle is an option for 2D graphics functions that specifies how frame ticks should be rendered.
FromCharacterCode[n] gives a string consisting of the character with integer code n. FromCharacterCode[{n_1, n_2, ...}] gives a string consisting of the sequence of ...