Assertion: filter | /r/ObjectUse | used by bourbaki
Facets:
value: in their book
type: LOCATION
value: subsequently
type: TEMPORAL
Source sentences:
text: Filters were introduced by Henri Cartan in 1937 and subsequently used by Bourbaki in their book Topologie Générale as an alternative to the similar notion of a net developed in 1922 by E. H. Moore and H. L. Smith.