Ceiling[x] gives the smallest integer greater than or equal to x. Ceiling[x, a] gives the smallest multiple of a greater than or equal to x.

FittedModel[...] represents the symbolic fitted model obtained from functions like LinearModelFit.

Infinity or \[Infinity] is a symbol that represents a positive infinite quantity.

NorlundB[n, a] gives Nørlund polynomials B_n^(a) of degree n in a.NorlundB[n, a, x] gives generalized Bernoulli polynomials B_n^(a)(x).

Normalize[v] gives the normalized form of a vector v. Normalize[z] gives the normalized form of a complex number z.Normalize[expr, f] normalizes with respect to the norm ...

ReverseBiorthogonalSplineWavelet[] represents a reverse biorthogonal spline wavelet of order 4 and dual order 2.ReverseBiorthogonalSplineWavelet[n, m] represents a reverse ...

Sow[e] specifies that e should be collected by the nearest enclosing Reap. Sow[e, tag] specifies that e should be collected by the nearest enclosing Reap whose pattern ...

SpokenString[expr] gives a string of text corresponding to a spoken representation of the expression expr.

WhittakerM[k, m, z] gives the Whittaker function M k, m (z).

Building large software systems in Mathematica should follow the general principles that apply to building any large software system. The details may be unique to Mathematica ...