DeleteCases[expr, pattern] removes all elements of expr that match pattern. DeleteCases[expr, pattern, levelspec] removes all parts of expr on levels specified by levelspec ...
Diagonal[m] gives the list of elements on the leading diagonal of the matrix m.Diagonal[m, k] gives the elements on the k\[Null]^th diagonal of m.
Except
(Built-in Mathematica Symbol) Except[c] is a pattern object which represents any expression except one that matches c. Except[c, p] represents any expression that matches p but not c.
ExclusionsStyle is an option to plotting functions that specifies how to render subregions excluded according to Exclusions.
FindLinearRecurrence[list] finds if possible the minimal linear recurrence that generates list.FindLinearRecurrence[list, d] finds if possible the linear recurrence of ...
InstallService["url"] installs the web service operations in the WSDL description at the URL given.InstallService["url", "context`"] installs web service operations, creating ...
IntegerPartitions[n] gives a list of all possible ways to partition the integer n into smaller integers. IntegerPartitions[n, k] gives partitions into at most k integers. ...
IntegerQ[expr] gives True if expr is an integer, and False otherwise.
PauliMatrix[k] gives the k\[Null]^th Pauli spin matrix \[Sigma]_k.
RemoveScheduledTask[obj] remove the obj from the list of currently set tasks.