Assertion: set | /r/HasProperty | subset
Facets:
value: by the definition of subset
type: MANNER
Source sentences:
text: In a Venn diagram, the action traditionally takes place inside a large rectangle that represents the universe U. One generally says that sets are represented by circles; but these sets can only be subsets of
text: The empty set is a subset of A : ∀ A : ∅ ⊆
text: If one set is "inside" another set, it is called a "subset".
text: Going back to our definition of subsets, if every element in the empty set is also in A, then the empty set is a subset of A.
text: Any set is a subset of itself, but not a proper subset.
text: By the definition of subset, the empty set is a subset of any set A.