• ← NotListQ
• → VectorQ

SubsetQ

WMA link

SubsetQ[$list_1$, $list_2$]

returns True if $list_2$ is a subset of $list_1$, and False otherwise.

• • SubsetQ[{1, 2, 3}, {3, 1}]

The empty list is a subset of every list:

• • SubsetQ[{}, {}]

• • SubsetQ[{1, 2, 3}, {}]

Every list is a subset of itself:

• • SubsetQ[{1, 2, 3}, {1, 2, 3}]