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Costas D Koutras, Christos Moyzes, Christos Nomikos, Konstantinos Tsaprounis, Yorgos Zikos, On weak filters and ultrafilters: Set theory from (and for) knowledge representation, Logic Journal of the IGPL, Volume 31, Issue 1, February 2023, Pages 68–95, https://doi.org/10.1093/jigpal/jzab030
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Abstract
Weak filters were introduced by K. Schlechta in the ’90s with the aim of interpreting defaults via a generalized ‘most’ quantifier in first-order logic. They arguably represent the largest class of structures that qualify as a ‘collection of large subsets’ of a given index set