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feat(Studies): translate BSL into modal information logic - #6223

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@hawkrobe hawkrobe commented Nov 4, 2026

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Formalizes Aloni, Baltag, van Benthem, Bezhanishvili and Knudstorp (2026): BSL and inquisitive entailment are entailment under Γ over distributive semilattices.

  • IsDistribSemilatticeSup, the exact hypothesis of IsLowerSet.sups and Set.OrdConnected.sups, which had assumed DistribLattice
  • Set.mem_sups_congr, the split transport shared by team bisimulation and the paper's p-morphism
  • isClosed_regularClosure_iff_of_finite: BSL support sets are Fine's regular propositions

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