AbortKernels[] aborts evaluations running in all parallel subkernels.
Accumulate[list] gives a list of the successive accumulated totals of elements in list.
AdjustmentBox[box, opts] is a low-level box construct which displays with the placement of box adjusted using the options given.
AlgebraicIntegerQ[a] yields True if a is an algebraic integer, and yields False otherwise.
AlgebraicNumberPolynomial[a, x] gives the polynomial in x corresponding to the AlgebraicNumber object a.
Assumptions is an option for functions such as Simplify, Refine, and Integrate that specifies default assumptions to be made about symbolic quantities.
AxesOrigin is an option for graphics functions that specifies where any axes drawn should cross.
BaseStyle is an option for formatting and related constructs that specifies the base style to use for them.
BesselK
(Built-in Mathematica Symbol) BesselK[n, z] gives the modified Bessel function of the second kind K_n (z).
BesselY
(Built-in Mathematica Symbol) BesselY[n, z] gives the Bessel function of the second kind Y_n (z).