Modal Logic
Web resources
Modal Logic (Stanford Encyclopedia of Philosophy) ★★
(in Coq) coq - Defining Kripke models and the canonical model for $S4$ modal logic - Proof Assistants Stack Exchange ★
Papers
Mathematical Modal Logic: A View of its Evolution (online @ homepages.ecs.vuw.ac.nz) ★ 💭
The Relationship between the Topological Properties and Common Modal Logics (online @ pubs.sciepub.com) ★ 💭
Topological semantics of modal logic (online @ tsinghualogic.net) ★★★ 💭
Topology, Connectedness, and Modal Logic (online @ www.dcs.bbk.ac.uk, web.archive.org) ★ 💭
A Modal Walk Through Space (online @ web.archive.org) ★★ 💭
The Situation Calculus: A Case for Modal Logic (online @ ai.stanford.edu) 💭
Modal Mu-Calculi (online @ www.julianbradfield.org) 💭
(in Abstract Algebra) Interior Algebras and Varieties (online @ core.ac.uk) ★ 💭
(in Abstract Algebra) Varieties of Interior Algebras (online @ eprints.illc.uva.nl) 💭
Books
Introductory Modal Logic (borrow @ archive.org) ★★★ 💭
First Steps in Modal Logic (borrow @ archive.org) ★★★ 💭
Dynamic Logic (borrow @ archive.org) ★ 💭
Modal Logic for Open Minds (borrow @ archive.org) ★ 💭