MAT
(Mathematica Import/Export Format) MATLAB MAT-files. Matrix data format. Native data format of the MATLAB numerical computation software. Stores numerical matrices, Boolean values, or strings. Binary format. ...
Catalan
(Built-in Mathematica Symbol) Catalan is Catalan's constant, with numerical value \[TildeEqual] 0.915966.
Coefficient[expr, form] gives the coefficient of form in the polynomial expr. Coefficient[expr, form, n] gives the coefficient of form^n in expr.
DiscreteDelta[n_1, n_2, ...] gives the discrete delta function \[Delta] (n_1, n_2, ...), equal to 1 if all the n_i are zero, and 0 otherwise.
DistributionParameterQ[dist] yields True if dist is a valid distribution, and yields False otherwise.
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 ...
HurwitzLerchPhi[z, s, a] gives the Hurwitz\[Dash]Lerch transcendent \[CapitalPhi](z, s, a).
HurwitzZeta[s, a] gives the Hurwitz zeta function \[Zeta](s, a).
IdentityMatrix[n] gives the n*n identity matrix.
LeafCount[expr] gives the total number of indivisible subexpressions in expr.