EndPackage[] restores $Context and $ContextPath to their values before the preceding BeginPackage, and prepends the current context to the list $ContextPath.
FindSequenceFunction[{a_1, a_2, a_3, ...}] attempts to find a simple function that yields the sequence a_n when given successive integer arguments.FindSequenceFunction[{{n_1, ...
FromContinuedFraction[list] reconstructs a number from the list of its continued fraction terms.
OptionValue[name] gives the value of name in options matched by OptionsPattern. OptionValue[f, name] gives the value of name for options associated with the head f. ...
expr /. rules applies a rule or list of rules in an attempt to transform each subpart of an expression expr.
SetOptions[s, name_1 -> value_1, name_2 -> value_2, ...] sets the specified default options for a symbol s. SetOptions[stream, ...] or SetOptions["name", ...] sets options ...
Shallow
(Built-in Mathematica Symbol) Shallow[expr] prints as a shallow form of expr. Shallow[expr, depth] prints with all parts of expr below the specified depth given in skeleton form. Shallow[expr, {depth, ...
StringLength["string"] gives the number of characters in a string.
TaggingRules is an option for selections that specifies a list of strings to be associated with a selection.
There are many Mathematica packages that implement symbolic mathematical operations. Here are a few examples drawn from the standard set of packages distributed with ...