UnderoverscriptBoxOptions -> {opt_1 -> val_1, opt_2 -> val_2, ...} is an option for selections that specifies settings for UnderoverscriptBox objects.
UnderscriptBoxOptions -> {opt_1 -> val_1, opt_2 -> val_2, ...} is an option for selections that specifies settings for UnderscriptBox objects.
InversePermutation[p] yields the multiplicative inverse of permutation p.
TrigToRadicals[expr] converts trigonometric functions to radicals whenever possible in expr.
NRoots
(Built-in Mathematica Symbol) NRoots[lhs == rhs, var] yields a disjunction of equations which represent numerical approximations to the roots of a polynomial equation.
Null
(Built-in Mathematica Symbol) Null is a symbol used to indicate the absence of an expression or a result. It is not displayed in ordinary output. When Null appears as a complete output expression, no ...
NumberMultiplier is an option for NumberForm and related functions which gives the string to use as a multiplication sign in scientific notation.
PrecedenceForm[expr, prec] prints with expr parenthesized as it would be if it contained an operator with precedence prec.
ConditionalExpression[expr, cond] is a symbolic construct that represents the expression expr when the condition cond is True.
DirichletL[k, j, s] gives the Dirichlet L-function L(\[Chi], s) for the Dirichlet character \[Chi](n) with modulus k and index j.