Nearest
(Built-in Mathematica Symbol) Nearest[{elem_1, elem_2, ...}, x] gives the list of elem_i to which x is nearest. Nearest[{elem_1 -> v_1, elem_2 -> v_2, ...}, x] gives the v_i corresponding to the elem_i to ...
PathGraph[{v_1, v_2, ...}] yields a path with vertices v_i and edges between v_i and v i +\[ThinSpace]1 .PathGraph[{e_1, e_2, ...}] yields a path with edges ...
PowerExpand[expr] expands all powers of products and powers. PowerExpand[expr, {x_1, x_2, ...}] expands only with respect to the variables x_i.
Property[item, name -> value] associates the property name -> value with item.
PropertyValue[{obj, item}, name] gives the property value associated with name for item in obj.
ProteinData["prot"] gives the reference amino acid sequence for the protein prot.ProteinData["prot", " property"] gives the value of the specified property for the protein ...
RemoveProperty[{obj, item}] removes all properties associated with item in obj.RemoveProperty[{obj, item}, name] removes the property name associated with item in obj.
SetProperty[{obj, item}, name -> value] sets the property name -> value for item in obj.
Thread
(Built-in Mathematica Symbol) Thread[f[args]] "threads" f over any lists that appear in args. Thread[f[args], h] threads f over any objects with head h that appear in args. Thread[f[args], h, n] threads f ...
TraditionalForm[expr] prints as an approximation to the traditional mathematical notation for expr.