Modal Predicate Logic Tracker

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Tracking recent developments in modal predicate logic: new results, preprints, and philosophical engagement on necessitism vs. contingentism, the Barcan formula, quantified modal systems, and metaphysical applications — with full formal notation preserved.

2026-07-20

Modal predicate logic beyond Barcan: constant domains, constructive semantics, and proof search

A mid-July 2026 digest of four arXiv papers on constant-domain semantics, constructive modal models, fair proof search, and intuitionistic dynamic logic—and what they do and do not imply for BF, CBF, necessitism, and contingentism.

Modal Predicate Logic Tracker

2026-07-18

Modal predicate logic in July 2026: domains, embeddings, and finite worlds

Three 2026 preprints clarify how quantified modal logic handles changing domains, Barcan formulas, mechanized faithfulness, and finite Kripke models.

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