Assertion: sequence's function | /r/HasProperty | bi-infinite
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: A function from the set Z of all integers into a set, such as for instance the sequence of all even integers ( ..., −4, −2, 0, 2, 4, 6, 8... ), is bi-infinite.
text: A function from all integers into a set is sometimes called a bi-infinite sequence, since it may be thought of as a sequence indexed by negative integers