pseudointersection
English
editEtymology
editFrom pseudo- + intersection.
Noun
editpseudointersection (plural pseudointersections)
- (mathematics) A set for which the number of elements that are not in the intersection (of two infinite sets) is finite.
- 2016, Jörg Brendle, Barnabás Farkas, Jonathan Verner, “Towers in filters, cardinal invariants, and Luzin type families”, in arXiv[1]:
- We investigate which filters on can contain towers, that is, a modulo finite descending sequence without any pseudointersection (in ).