Options associated with the interactive entering of expressions. The option SingleLetterItalics is typically set whenever a cell uses TraditionalForm. Here is an expression ...
SymbolicMathMLToBoxes[smml] converts the MathML-flavored SymbolicXML structure, smml, into a Mathematica box expression.
EllipticF[\[Phi], m] gives the elliptic integral of the first kind F(\[Phi] \[VerticalSeparator] m).
SignificanceLevel is an option to VarianceTest and similar functions that controls cutoffs for diagnostic tests as well as test conclusions.
When Mathematica plots a graph for you, it has to make many choices. It has to work out what the scales should be, where the function should be sampled, how the axes should ...
ProductLog[z] gives the principal solution for w in z == w e^w. ProductLog[k, z] gives the k\[Null]^th solution.
ArcCos
(Built-in Mathematica Symbol) ArcCos[z] gives the arc cosine cos -1 (z) of the complex number z.
ArcSin
(Built-in Mathematica Symbol) ArcSin[z] gives the arc sine sin -1 (z) of the complex number z.
BetaRegularized[z, a, b] gives the regularized incomplete beta function I_z (a, b).
Binomial[n, m] gives the binomial coefficient ( { {n}, {m} } ).