Visser frames for sublogics of IL
Abstract
We study the modal completeness and the finite frame property of several sublogics of the logic IL of interpretability with respect to Visser frames, which are also called simplified Veltman frames. Among other things, we prove that the logic CL of conservativity has the finite frame property with respect to that frames. This is an affirmative solution to Ignatiev's problem.
0
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.