A new coalgebraic Lindström theorem

Research output: Contribution to journalArticle


In a recent article, Alexander Kurz and Yde Venema establish a Lindström theorem for coalgebraic modal logic that is shown to imply a modal Lindström theorem by Maarten de Rijke. A later modal Lindström theorem has been established by Johan van Benthem, and this result still lacks a coalgebraic formulation. The main obstacle has so far been the lack of a suitable notion of ‘submodels’ in coalgebraic semantics, and the problem is left open by Kurz and Venema. In this article, we propose a solution to this problem and derive a general coalgebraic Lindström theorem along the lines of van Benthem's result. We provide several applications of the result.


  • Sebastian Enqvist
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Philosophy


  • Coalgebra, modal logic, abstract model theory, Lindström's theorem
Original languageEnglish
Pages (from-to)1541-1566
JournalJournal of Logic and Computation
Issue number5
Early online date2014 Jul 7
Publication statusPublished - 2016
Publication categoryResearch