ExpressionTree[e] plots the expression tree of e.ExpressionTreePlot[e, pos] plots the expression tree of e with its root placed at position pos.ExpressionTreePlot[e, pos, ...

ExpressionToSymbolicMathML[expr] converts the Mathematica expression, expr, into a MathML-flavored SymbolicXML structure.

GraphCenter[g] gives the set of vertices with minimum eccentricity in the graph g.

SquaredEuclideanDistance[u, v] gives the squared Euclidean distance between vectors u and v.

An integration rule computes an estimate of an integral over a region, typically using a weighted sum. In the context of NIntegrate usage, an integration rule object provides ...

StringQ[expr] gives True if expr is a string, and False otherwise.

StringReplace["string", s -> sp] or StringReplace["string", {s_1 -> sp_1, s_2 -> sp_2, ...}] replaces the string expressions s_i by sp_i whenever they appear as substrings of ...

ToLowerCase[string] yields a string in which all letters have been converted to lowercase.

ForAll[x, expr] represents the statement that expr is True for all values of x. ForAll[x, cond, expr] states that expr is True for all x satisfying the condition cond. ...

TreeForm[expr] displays expr as a tree with different levels at different depths. TreeForm[expr, n] displays expr as a tree only down to level n.