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Mathematica > Core Language > List Manipulation > Rearranging & Restructuring Lists > Complement >

BUILT-IN MATHEMATICA SYMBOL

Complement

gives the elements in

which are not in any of the

Complement[e_all, e₁, ..., SameTest->test] applies test to each pair of elements in and the to determine whether they should be considered the same.

Find which elements in the first list are not in any of the subsequent lists:

Out[1]=

Complement works with any head, not just List:

Find divisors of 20 that are not also divisors of 12:

Find which triples of digits do not occur in the binary decomposition of 12345:

Find which options to Plot are not also options to Graphics:

Find which length-5 sequences never occur after 2 steps in any elementary cellular automaton: